I've tried being less

Hi guys. I've been an emotional person through and through my whole life. And because of that many people take advantage of my sensitivity and hurt me. It's so easy for them.

No matter how much I try I cannot for the life of me be one of those people who don't let others actions affect them. I've tried my whole life doing that. I just end up with a build up that bursts anytime.

I don't want to be this sensitive person anymore who is always crying about how someone did them dirty again.

What tips do you guys have on having a thick skin and just leaving people behind that knowingly cause you hurt. Because I struggle to leave people like that. Again, because I'm afraid of hurting them and in the end its me being the hurt one.

Like how do I simply end such relationships and never look behind? I've seen so many people do that so ik it's definitely a possibility..