I used to be like that, I mean ...I still mostly am, I have no self esteem, or any of that, but I just don't care about most people any more. If you are cool with me, I will do almost anything I can to help you, but I am tried of getting stabbed in the back, a lesson I have to keep relearning every few years, so I try to keep the people close to me limited.Well in my case it is and it isn't. It is in my values to try and be nice and helping to everyone. I'd feel guilty anyway if I didn't. And it's not like I struggle to be "nice" it comes to me naturally.
But I also have no self esteem to speak of and I'm a starved for love needy son of a bitch so I will try to make people happy at my own detriment. I'm taking pills about it.
Mostly I found pot which keeps me in a good mood (and curb a lot of pain and other problems I have), I do my damnedest to avoid drama, and I work on things that make me happy.