Anyway to answer your question - we get our opinion of ourselves from our family, according to some theories of psychology. It's called a bad self-object. After so long of a parent putting us down, we start doing it for them - we'd rather have control of the insults, do it to ourselves before somebody else does it to us. Then we just start to believe it. Going to a t can change that, but it takes a while and it helps if you don't see your insulters. The weather is nice, get out to Kensington and walk off those pounds