Simply believing in another person, and showing it in your words and deeds, can make a huge difference in their life. Studies of people who grew up in dysfunctional homes but who grew up to be happy and successful show that the one thing they had in common was someone who believed in them. Do this for those you care about. Support their dreams and passions and hobbies. Participate with them. Cheer for them. Be nothing but encouraging. Whether they actually accomplish these dreams or not, your belief is of infinite importance to them.