Doing great things for others is an awesome gift to give yourself.
Other people's opinions of you are none of your business.
To have what few have, do what few do.
Know that the thing that is easiest to do is rarely the thing that is best to do.
Commit to Excellence. Become massively innovative and wear your passion on your sleeve. They might call you different or weird or even crazy. But please remember, every great leader (or visionary or brave thinker) was initially laughed at. Now they are revered.
Measure the success of your days by the lives touched vs the hours passed.