Against Cost-Multiplication
Many people have lives containing nonzero numbers of unpleasant experiences.
Many of these experiences are unpleasant in a pretty straightforward and direct manner. There are sensations directly viscerally coded as unpleasant for most people in most contexts, such as pain, excessive heat or cold, hunger, unpleasant sounds or tastes or smells, and so forth. There are emotional states which are directly unpleasant for most people in most contexts, such as grief, sadness, despair, and so forth. There's depression, for those who have it in a manner sufficiently unresponsive to external quality-of-life. Et cetera.
Many other unpleasant experiences, though, are unpleasant, not through their direct effects, but through opportunity cost. Lack of energy, which is unpleasant because it prevents pursuit of pleasant-but-energy-consuming activities. Uninteresting-but-necessary chores which are unpleasant by comparison with the hobbies one might otherwise spend one's time on. Being stuck in a hospital bed and thus unable to go take walks outside, for those of us who enjoy such things. Examples abound.
Sometimes, the two can overlap. Sufficiently intense pain, for instance, in addition to its direct unpleasantness, can be debilitatingly distracting from other activities. Sickness can be both directly unpleasant and energy-draining. And so forth.
However, despite this potential for overlap, it's very important to keep track of the difference. Because, otherwise, nasty feedback-loops can occur in such a way as to multiply what should be a relatively mild opportunity-cost-induced unpleasantness into a large spike of direct unpleasantness.
Specifically, there's an easy pathway for one's thoughts to flow down which runs as follows:
Some opportunity-cost-inflicting thing is happening. (Let's say, by way of example, that my garbage can has filled up and thus I need to go spend five minutes taking the current bag outside and installing a new one in the can.)
This is bad! My life is worse as a result of this thing happening!
The proper response to bad things happening is to feel unpleasant emotions about them.
...therefore, instead of just paying the opportunity cost and moving on, I'm paying the opportunity cost and also a direct cost.
I've experienced variants of this same thought-chain in a wide variety of opportunity-cost-inflicting contexts. Taking out the garbage; being sick such that I lack the energy to pursue my hobbies; being in pain such that I lack the spare attention to pursue my hobbies; et cetera. While I lack the mind-reading ability to be sure that others experience it too, I at least strongly suspect it.
But it's a bad thought-chain to go down! The first step can't be skipped, and the second step is a true and correct analysis, but the third step is entirely counterproductive, producing unpleasantness to no benefit at all. The cost is already paid just via the first step; piling additional costs on top of it just makes things worse, while helping no one at all.
(And, in case it wasn't clear from that example-pile: it can happen even amid the overlapped cases. Sickness can be unpleasant via that thought-chain on top of whatever more direct unpleasantness it's inflicting, for example.)
Thus, I've found it helpful, when looking back at unpleasant-emotion-producing experiences in retrospect—especially frequently-recurring ones, like the garbage-can one (which was the first instance of this pattern that I noticed, back when I was a teenager)—to try to backtrace to what extent those emotions are a product of this sort of cost-multiplication pattern. And, if they are a product of the cost-multiplication pattern, it's then worth trying to cut the pattern off from then on. To deliberately pay attention to the true size of the opportunity cost I'm paying, and to resist the urge to have emotional reactions to that cost on top of the cost itself.
Because bad and unpleasant things happen, and it's hard to avoid them entirely. But it's at least possible to avoid piling additional badness on top of them, beyond whatever badness might be inherent to them; and, if we can do that, then it seems to me that we should.