How do I not notice people looking at me ?

I think you may always notice that people are looking at you - it's how you perceive them looking at you. You don't know if they are actually "judging" you or if they are lost in thoughts about their own lives. And usually it is the latter.

You need focus on yourself, breathe and start counting, close your eyes and think that those people are not looking for you, it's nothing wrong with you.

Either you are not self absorbed human being or you are too busy to worry about the people around you

Trying to overcome something that bothers you, cannot be done by avoiding it. You better try working on your perspective about that certain thing. If it is how can you stop the fact that you are suffering terribly when people are looking at you then first of all accept this fact. Accept your feeling, don't run from it. Try to see why do you feel the way you are feeling and what would make it better. We cannot escape what we are afraid of by running from it because our mind will trick ourselves in thinking worse. Reality tends to be more passive then how we imagine it when we are afraid of something.

Make it as if it were normal, If people is looking at me , I should feel valued , rather than depressed , because am just special no unique

I don' think you can just stop noticing something like that. However, you need to come to a point where people staring at you doesn't bother you. To do that, you need to accept that you are you, and that will not change by a few looks thrown your way. Embrace those looks, because obviously you're something worthy and better than anything they have in their lives :)

I don't know unless they get my attention or if I catch some one looking at me .

Try to focus on something besides people looking at you such as your phone or a book. Try to remain calm and collected.