The thing about radical kindness (or any kindness, for that matter) is that there are going to be times when someone or something makes you regret it. There are going to be times when you show someone empathy and grace that they don't "deserve". There are going to be times when someone takes that kindness and uses it against you. The world doesn't magically transform into a perfect place when you decide to choose kindness and people will take advantage of it. People will continue to be shitty.
But the thing is...that's not a flaw of kindness. That's not a you problem. That's a them problem. People who are happy with themselves and their lives don't go out of their way to misuse someone's kindness or grace. The "normal" response to kindness or empathy is not to find a way to exploit it. People who are happy with themselves don't look for ways to hurt people for no reason. Kindness will never be the problem. No matter what some shitty person decides to do with it. It should go without saying not to be a doormat, yes. Don't allow people to treat you badly just for the sake of being kind. But also don't let shitty people make you bitter because of how they treated you when you were kind.
People will make you regret being unkind too and that one usually hurts a lot more
