Hmmmm. I suppose you have to ask yourself why you feel the need to please others. Why does it contribute to your self worth if someone likes (or dislikes) your appearance? I'm guessing you're talking specifically about the physical. It can't work from the other side, people think what they do about you. Fat,ugly, stupid...whatever, you can't change that view. So you have to work from your end,towards not giving a **** and being sure of yourself and your positive qualities.
The best thing you can do is rationalise these thoughts. The more you do that, the less bothered you are by what people think of you. I'm nearly there, there's literally only one...maybe two things someone can say that will hurt me

But apart from that...I really don't care. People look at me, so what? Human beings do that a lot. And if a hot guy happens to be, wellll
You can't know what these people are thinking. You can't know if it's negative or not.
I don't believe any human being can ever be totally desensitised from other's judgements. There's always something that will hurt you, that's why you should be careful not to divulge what that is. I'm sure most of us have the made the mistake of doing so, though. It's an unobtainable dream.
Change your thoughts, not you actual appearance. There's nothing wrong with you, just how people have been conditioned to perceive you. We've all been affected really, some are working to undo how we've been conditioned and encouraged to think. Like me