Here is the most important thing that may help better the world, and it is done by:
Martin Luther king jr.
Les Brown
Jesus
Marcus Aurelius
Napolean
Dale Carnegie
Abraham Lincoln
Julius Caesar
Albert Einstein
Thomas Edison
Sigmun Freud
Socrates
John F. Kennedy
Brian Tracy
Oprah
Etc.

These People have the same shared trait
and that is they lead people and they teach people

Let me give you a Quote from a Chinese Proverb
"GIVE A MAN A FISH AND YOU FEED HIM FOR A DAY. TEACH A MAN HOW TO FISH AND YOU FEED HIM FOR A LIFETIME"

So what will you teach to people?
Teach them Leadership
Teach them Money
Teach them Wisdom
Teach them how to treat people
Teach them not to war
Teach them, teach them, teach them.

Also be a Leader in this world full of Idolizing and following celebrities that teaches them how to be a materialistic person!

It must be your ultimate goal! and I'm Done!