I reflect you and you - you are me.
Everything that you don't like in other people, everything that bothers you - is simply your reflection, don't you think? And when you are hurt by what you see in other people - it's simply you hurting yourself.
I know it doesn't make it easier when you realize things like this but this is a good start to understanding and accepting yourself. No no, I'm not an expert of life it's just how it works with me :)