Nope. I used to wonder about that but studying in a field of people who have to be nice and caring as part of their job description, the answer is no. All of my human service professors are the nicest people ever, but they still know how to set boundaries and they still don't let you walk all over them. So you can still be a nice, caring person while also taking care of yourself and respecting yourself. Not the easiest thing to balance though, I imagine, but it is entirely possible