Leaving became too familiar. I don't know how to fix this issue

Whether its is relationships, work, or group, when slight or big problems arise, my first response is to leave.

I don't know if it's because of my childhood. When I was a kid, my family and I used to changed address time to time because of my father's work. Leaving is still painful but I'm used to it.

Now, I want to have a enduring relationship and stable job, but I'm tempted to leave again. For my job, it is my 6th job. For the relationship, I dated a lot, had 3 bf's, but tempted to leave again because of a problem.

My sister have the same issue on job, but she has good relationship with her now husband.

I don't know ho I will fix this.