At age 50 I'm feeling that way! Better late than never. Is 55 really the age I'm allowed to move into an Old People Home? Hah.
The Boundary thing has been key for me as I learn to love again. It's ok to say NO and it's ok to feel guilty after saying No because that's better than constantly pleasing and building up resentment. Damn. I sound like an old wise person. Hah.