When things change, people change. There's a point in life where you get tired of chasing everyone and trying to fix things, but its not giving up. You've got to do what's right for you, even if it hurts.
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.