why am I like this

I'm gonna fuck things up I just know it, I don't think before I speak and that's my problem. I'm trying to stop I'm trying to be less like me and more of who people want me to be, but everyone wants a different version and it's so tiring to keep up. I want to good enough for my boyfriend, my friends and my family but no matter how hard I try I always do something wrong. They stay with me due to pity and nothing else.