Sometimes I feel lonely, sometimes I feel happy
others, I feel like nobody understood me
and that no one cares who only care about their welfare.
And it hurts, but I learned to be strong, do not get carried away by others and be myself, because that's the only way to be happy. First, be pleased yourself, you're the one where you try to be happy. Once, someone very wise said, do not try to please people, because it will never be possible, just try to be fine.
This is my teaching, be happy. In order to transmit that happiness to someone in need. It does not matter or you are an eating books, an anti-social or anything, just remember, be you.