Just because you aren't given the credit and haven't been recognised for your work doesn't mean you have to give up or stop. You don't always need credit, other people do not always have to know what you are capable of doing as long as you do.
The bets kind of people are the ones that come into your life, and make you see the sun where you once saw clouds. The people that believe in you so much, you start to believe in you too, simply for being you. The once in a lifetime kind of people.