Nice question!
Put your focus on the INTERNAL, not the external. Don't follow society, just because you see someone wearing "coool" clothes, doesn't mean that what you should do too! The point is, society doesn't always know what's the best for you.... Only YOU can have your best interrest at hand. When you put your focus on other people, on how society looks at you, you may be trying to get that which you exactly don't want. If you are DEPENDENT on society.... And society doesn't always know what's the best for you..... You may start thinking, "Whoa, I got to stand back a while, do things on my own, so I don't get involved in something stupid!". My point is that you're very well on your own, so develop your OWN worth based on yourself.
So the point is, be independent! Do things for YOU. REmember,
you are the most important person. IF you are in SI for some time, you know you have value, and so be patient,
even if people don't like you, or give you too much attention, that doesn't mean that something is wrong with you, and it really isn't a sign that you should proove yourself to them.... KNOW YOUR VALUE! You're improving every day, give some pride to yourself.
Next reason, why waste your energy WORRYING about something you have NO CONTROL over?! No matter how much approval you seek, people may or may not like you, it's up to THEM, not you. You can be the best, but I may not like you for some reason. If you, however, asked the person by my side, he'd tell you a completley different thing.
Peoples OPINIONS differ a lot, and lots of times it has nothing to do with you anyway... So save your energy, get rid of beliefs that bring you down (They must hate me because I'm so lame!) because those don't benefit you at all.
Last thing, now that you find out your self value, why bother if someone knows or not if you're the man, why bother if someone likes you or not?! There are lots of good places around the world, all friendly to talk to someone who is a good guy and is willing to help others out. So if your particular group doesn't like you for a lame reason... Either think about it, and change yourself, (IF you are really acting bad), but anyways, you wouldn't care much anyway, the world is full of lots of love for the good guys, remember that.
(above post is just my personal opinion btw, your reason to why you not care would probably be different from mines, as everyone sees the world differently.)
The above posters lay it out very well, props to them, I'm loving the initiative of really helping others! I'm going to refer you to some posts.
http://www.sosuave.net/forum/showthread.php?t=137740
http://www.sosuave.net/forum/showthread.php?t=149263