I had a weird upbringing. My folks would openly mock the way I laughed, my mother told me she wished I would have never came out of her body, and anytime I got my haircut, my sperm donor would say I looked like a fuckin' nerd and poindexter(this was back in the day when using slang terms for smart was considered an insult in my HighSchool days lol). When I developed a phobia of getting my haircut, I was told I looked like a tree-hugging hippy and a pansy by my sperm donor. Got called cocksuckr a lot for the slightest mistakes, or not washing the dishes the exact same way he would do it, simple stuff like not going about things as if I was a carbon copy of him. Couldn't even mow the lawn without him breathing down my neck, unless it was cut in the same pattern he would have it cut...etc.
On the other hand I was always told I'm handsome and got hit on by some of the 'hot' girls and some guys. This didn't compute in my brain, as you kind of listen to what your family says about you and take it to heart more than your peers, at least in my case. I still look in the mirror and have body dysmorphic issues that probably will never go away; I generally don't take care of my appearance much anymore as I always look hideous to myself, even when well groomed.
When I get bursts of temporary energy and start to take care of myself better and try to venture out and find friends I'll usually get complimented on my looks randomly, but again it translates into veiled insults because I still have it in my mind that I'm ugly as sin, and see myself in the mirror that way.
It doesn't bother me so much now that I'm in my late twenties and am contemplating CTB in my near future, nothing really does as much. For a long time though it was a huge contribution to my overall depression and social phobia. I can't really tell whether emotional or physical abuse and a myriad of other shit played the biggest role in my almost non-existant self-esteem. I was also called an alcoholic as a young boy, long before I ever tried any drink or took any other drugs, so that probably set me up to feel like a scumbag too, as I still feel like an alcoholic and substance abuser, even though I don't abuse substances.
I guess if you get called an alcoholic when you're around 10 years old repeatedly when you haven't even tried alcohol, it confuses you as to what qualifies as such. I was told you don't have to pick up a drink to be an alcoholic, and it shows through in my behavior by my sperm donor, so I always wear that invisible tag, even though I drink maybe a few times a year and don't get black out drunk, just enjoy drinking different exotic beer brands, and the light buzz I get.