You shouldn't wait for other people to make special things happen. You have to create your own memories.
I'm not saying that everyone should swim with sharks, but sometimes you have to jump over your own shadow in order to learn something that you will never forget for the rest of your life. Then you know you can conquer your fears.
I think it's important to get your surroundings as well as yourself into a positive state — meaning surround yourself with positive people, not the kind who are negative and jealous of everything you do.