Why do we under value ourselves?

I have been posed the question of why I don't feel worthy enough to be loved? I have been thinking of nothing else, why? What is it that makes me feel this way? As successful as I have become in other parts of my life, relationships are still a mystery. I want to believe that I deserve the best but something stops me. I can't figure out what it is, it makes me cry whatever it is. I know that I want someone to love me passionately and totally, I want to love someone passionately and totally. I want to be free and feel butterflies, why am I afraid to believe that I deserve the best?

I know that until I figure that out, I can never have a successful relationship. Is this why I hold on to the past, even when the past refuses to hold on to me. Is it me that makes me unlovable?

I have been trying to figure out what it is about me that attracts losers, users and jerks? This cannot be what I truly want for myself, it must be what I think I deserve as the universe and God certainly don't want this for me.

I have decided to work on my outside and hopefully I will take the same opportunity to work on my insides as well. I cannot be fully happy without both...

I certainly need to be kinder to myself, I never realized how much I didn't really like myself until today. I have been putting all this crap out to the universe and I have been accepting it, only a person who doesn't love themselves would do this. It definitely is time for a change!