Freedom
Everyone have to have this ability in life, to feel free. Secret to happiness is freedom.
Doing what you love is something that makes you happy, by doing photography, sports, writing, reading etc... No one can prevent you from doing this, it's your own will that keeps you going further into life.
Sometimes you will feel lonely in life, but remember, you always can make better out of that by doing something that makes you good no matter what. Always is better when you have friends to share your freedom with them.
A hero is someone who understands the responsibility that comes with his freedom.
Bob Dylan