<human>: Hi wonderful people of /r/relationships,

My BF and I have been dating for some time and recently got back together after he broke up with me for a week.

Long story short, I lack a lot of confidence in myself and others, and it's straining our relationship. I had to convince him to give me another chance, that I could toughen up and develop more trust of him and confidence in myself... But I'm having a lot of trouble.

I am not a very confident woman at all. I spend a lot of time doubting myself, and him. I know it's not good! And the cliche of not being able to accept love until you love yourself is always ringing in my head. I would just like some solid advice, maybe a mantra or something, to help me trust him more. It's not that he's ever done anything untrustworthy either, it's just that I have a past of being hurt and such that makes it really difficult sometimes.

I want to change not only for our relationship, but also because I need it to become successful in my life. It's really tearing me apart. I get mad at him because he's friends with all these beautiful girls, and it makes me uncomfortable... He calls me beautiful and tells me he loves me everyday though! I don't know how to effectively change myself.

I get jealous, suspicious, and say stupid mean things when I know rationally I have no reason to. Please help.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I lack a lot of self-confidence and trust for others that has torn apart my current relationship; I have the chance to make things work with a wonderful man, but I need to find confidence and trust for others!