Do great things, but do it for yourself. Because everyone else is busy doing great things of their own. If for a little while, you can entertain, motivate and encourage them to follow their path, by following your own, they'll like you and love you and share your ideas with people they care about.
Instead of advising them, inspire them. It’s their path after all. Don't waste yourself bragging what they should do because they have their own personal quest, just like you do. Do your own great work. Everyone else will take care of themselves.