I like what was said above: If you get better, you have something to lose; and feeling bad is what's "normal" for you now; and getting better takes effort and energy that you likely don't have right now.

I'd like to add to that. Sometimes it's so comfortable to do what I've always done, even if what I've always done is feel bad. Feeling good... what is that even supposed to look like? It's so unknown, so risky, sometimes it feels like it's not even worth the effort.

I often have to remind myself that even though I'm so comfortable feeling negative, I hate having my life that way. This gets me the motivation to look at what I really want my life to look like instead, or at least what I DON'T want my life to look like, so that I get the motivation to seek change, even though I don't feel like seeking change.

I hope this helps in some way.