Abandonment, betrayal and loss/change. Being out of control of my life - heh.
I have overcome them most of the time, if I have time to think things through. Many of these will still trigger me, however, if they are sprung on me. The ironic part of this is that I am fine on my own, mostly misanthropic and a lot more self-sufficient (health-permitting, of course) than I give myself credit for. Ah, the triggers we carry from childhood to the grave… Wow. That would make a great lyric for a song.