TeeandCee, what a wonderful thing that you've been able to move to a more secure, peaceful place when dealing with others. I think it's very common for us to suffer this way.
I had a friend who I admired and adored and was close to at one time. But the friendship really challenged me in that the buttons of my insecurity and envy kept getting pushed. This friend was someone I regarded as successful in many ways, and I loved feeling associated with that. However her way of communicating can be very blunt and didactic (she is a schoolteacher) and I would quite often be irritated and offended by how she dealt with me.
When I felt annoyed with her, all sorts of other feelings and thoughts would be stirred up in me as well. Thoughts about, why bother being so nice to her when not only is she not always nice to me, but also that her life must be so easy, being blonde, tall, leggy, Anglo, and conventionally pretty. She must have doors opening for her everywhere. Her husband is a very successful professional and they seem to be jetsetting around the world half the time. Her kid, same age as mine, has won awards...
I HATED the way I felt about her. This kind of quiet hostility, like I was giving her the evil eye, wishing her bad luck. Not consciously, it was a very primal reaction, the triggering and unleashing of all my insecurities. I would battle with myself to try to be reasonable, compassionate. But I would feel so rejected by her, even though my self esteem is normally quite good.
Mixed with this was feeling sorry for her, because at times certain people have regarded me the way I regard her (as being more conventionally attractive/slimmer/smarter/more successful, having everything, so why not take some of it away). I have felt their envy and hostility and let me tell you I don't wish that on anyone.
And under that was wanting this friend (who was very busy and who I now realise diverged from me in a few key areas, values/attitudes-wise) to respect me and love me and include me.
The best thing for me has been not pursuing the friendship, not even looking at their pics online, because it brings out the crazy in me.