Don’t ditch your fit goal: fitness motivation. "Never quit. If you stumble get back up. What happened yesterday no longer matters. Today's another day so get back on track and move closer to your dreams and goals.
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.