Wow. Where do I begin? My self-esteem, which was not great to begin with, became worse; then, it got better. Nothing made the self-esteem issue clearer and pushed it to the surface more forcefully than being in an abusive relationship. I realized what attracted this person to me; why I tolerated it; that the things he did were wrong and not my fault; and that I deserved love, acceptance and respect. It was eye-opening to say the least.
And yes, the most beautiful thing that came out of it was my daughter. :)