Women that play the caretaking role in friendships, did you eventually experience resentment, and what did you feel?

I mean to describe one sided care taking, where you put a lot of effort into supporting a friend, not a physical or health related care taking role. Emotional caretaker, whether it's asked of us not. Some of us just gravitate towards this role until we learn a lesson. Like, why did we do all that work?

And if so, how did you change your role in the friendship?