an obsession is when your mind becomes fixated on something: it’s a mental preoccupation that can be troubling and intrusive. what we obsess over can be indicated by the 8th lord. because the 8th house is an averse house, this obsession can be a distortion of the self/mind.
if you want to learn more, my readings are open.
eighth ruler in first gives someone a preoccupation with themselves, their bodies/faces, their health, etc. they may be overall obsessive, can be controlling. may struggle with persistent mental health issues, they may also get plastic surgery or have body dysmorphia.
↳ example: angelina jolie. eighth house in aquarius lorded by a first house cancer saturn. expressed an insecurity with unbelonging, insecurities relating to her surgeries, and fears of not being a good mother. (cancer saturn core lol)
eighth ruler in second gives someone a preoccupation with their resources and finances. they may be someone who resource guards a lot. this can come from a fear of lack or poverty. they also could obsess over their diet and nutrition. in extreme cases, this can result in struggles with disordered eating.
↳ example: demi lovato. eighth house in pisces lorded by a second house virgo jupiter. struggles with compulsive disordered eating
eighth ruler in third gives someone a general mental fixations. this can manifest as mental disorders with obsessive or compulsive symptoms, such as obsessive compulsive disorder. they may also experience religious obsessions, as well as obsessions over information. good at pattern recognition. they could make great detectives. they obsess over details and are always reading in between the lines.
 ↳ example: linda goodman. eighth house in scorpio lorded by a third house gemini mars. she’s an astrologer, which is known for pattern recognition. it’s almost like an esoteric detective lol which combines the esoteric and informative qualities of both houses.
eighth ruler in fourth gives someone obsession over their domestic lives, their families, their parents, etc. their families could induce paranoia or a feeling of instability. these people overall just tend to be hyperfixated on maintaining their privacy or distance from the public eye.
↳ example: britney spears. eighth house in taurus lorded by a fourth house capricorn venus (which is conjunct south node). the conservatorship. her father owned her estate. she lacked personal autonomy and was imprisoned in her own home by her own family. she has admitted to hating being famous & feeling controlled.
eighth ruler in fifth gives someone obsessions over their children, sex life, romantic life, pleasure, or finances. they could be ill-managed with money or simply enjoy to spend a lot of money on things that bring them joy or pleasure, become extremely enmeshed with their romantic partners, or be extremely possessive or controlling over their children. can be jealous as well. might also be sexually perverse or kinky.
↳ example: beyoncé. eighth house in scorpio lorded by a fifth house leo mars. that lady spent like six bands on sex toys with jay-z. i also don’t think she necessarily is controlling of her children, but she does guard them a lot from public eye. she had a traumatic experience with children (multiple miscarriages), then her rainbow baby (blue) was picked apart by the world. doesn’t help that she’s an 8th house scorpio moon.
eighth ruler in sixth gives someone obsessions over their health, diet, or nutrition. it can also make someone a bit of a workaholic, or someone who is obsessive over hygiene & cleanliness. this is a placement of neat freaks/control freaks, lol. may also be extremely physically active. they can also be celibate or abstinent, obsessive over not having sex.
↳ example: serena williams. eighth house in sagittarius lorded by a sixth house libra jupiter. she’s a world class athlete. extremely concerned with her body and health.
eighth ruler in seventh gives people obsessions over contracts, business partnerships, paranoia over enemies or being backdoored/betrayed, obsessions over a longterm romantic partner or spouse. they may identify too strongly with the people around them. they may lose themselves a bit in their partnerships. possessiveeee. also can be sexually perverse or kinky.
↳ example: ariana “i’m obsessive and i love too hard” grande. eighth house in leo lorded by a seventh house cancer sun. i don’t need to say shit else.
eighth ruler in eighth gives an obsession with longevity & permanence, but also persistent mental health issues that have long-lasting consequences. they can also be obsessed with the dead, their own deaths, or give obsessions over the occult or taboo. their obsessions can be their own downfall, self-affirming and destructive. overall obsessive people though. anything & anyone they become fixed on, they will never let go. if ever. AT WORST … can be sexually perverse, but in ways that are less about sex and more about controlling someone. (such as… sexual abuse /:)
example: adolf hitler. eighth house in taurus lorded by an eighth house taurus venus. again … i don’t think i need to say anything else. his life was filled with ruthless pursuits of power and control. we know about the holocaust. but did you know he also abused his niece? it presumedly drove her to suicide.
eighth ruler in ninth gives someone an obsession over structural religion. i feel like it can cause religious psychosis for that reason, because their mind becomes fixated on appeasing god (as an institution). they may also be obsessive over higher education. can be politically obsessive as well. enforcing principles or beliefs.
↳ example: kamala harris. eighth house in capricorn lorded by a ninth house aquarius saturn. i’m not sure if this manifests as obsession, but the placement appears (to me) as a drive to politically reform. if she were the president elect, she’d be the second mixed-race black president, the first female president, and the first south asian president. she was the first of all with regards to vice presidency. she is the highest-ranking female official in u.s. history — sounds very aquarius saturn in ninth to me!
also note that the ninth house is the house of the sun’s joy for this reason. when she backtracked on her politics that made her seem “revolutionary/unique”, (re: her stance on trans people, her stance on palestine, etc) it was speculated that it cost her the election. but tbh. i didn’t think she was gonna win anyways just because she’s a woman of color lol. in this political climate? chile… anyways
eighth ruler in tenth gives someone a preoccupation with how they are perceived by the public. these people can be extremely insecure and their insecurities are extremely public. they pick themselves apart, especially by comparing themselves to others. can also give an obsession with legacy, authority, or status. can be domineering. it comes from insecurity either way
↳ example: sza. eighth house in virgo lorded by a tenth house scorpio mercury. she is sensitive to how she is seen, constantly getting cosmetic work, is overtly insecure, controlling of her public image. like remember when those unflattering paparazzi pics posted and she was in that one fan’s dms about taking the pics down? it’s not even that i disagree with her (paps are invasive and weird) but it’s just an example about her obsessive self image.
eighth ruler in eleventh can give obsessions and paranoias over your friend groups, it may be rooted in an insecurity of being betrayed, unaccepted, or rejected. they may feel misunderstood. with the monetary side of the eleventh house, can also manifest in someone overly concerned with wealth and monetary gains. can be extremely consumerist.
↳ example: vincent van gogh. eighth house in aquarius lorded by an eleventh house taurus saturn. he craved a community of artists. he actually tried to make one! which is very taurus saturn in eleventh, isn’t it? unfortunately, i feel like that placement also manifested as feeling rejected by the art community. in life, he suffered tremendously and his fame is almost entirely posthumous.
his fame was attributed to his sister publishing his art after he died: he has a 12th house gemini north node with the ruler of his north node in the 10th house in aries. astrology is so on the nose at times lol.
eighth ruler in twelfth is a placement i notice in people who are obsessed that result in isolating events, such as imprisonment or hospitalization or drug usage. they are obsessed with things that result in them losing themselves (so this is why it often results in some form of addiction, dissociation, or self-undoing). they also can be obsessive over privacy or being inaccessible. going to far lengths to avoid perception. solitude can feel safe. persistent mental health issues though, and they directly affect the body. their minds are like a prison lol.
↳ example: bella hadid. eighth house in aries lorded by a twelfth house leo mars. she is often hospitalized (but i don’t know enough about her to say whether or not this is self-induced; however, 8L in 12H is a chronic disease indicator). she also has struggled with disordered eating and alcohol, as well as the pressure of fame. she now says she focuses on her health (particularly holistic, which i feel like is 12H coded). she also doesn’t really seem to like to be too visible. she’s one of them “esoteric girlblogger” girls lol.