Research has proven that people feel less unhappy when they have done something (that they later decide they regret doing) than when they did not do that thing (and later decide they should have done it)..
What I mean by sharing this with you is, take as many opportunities as you can; try things without being too cautious about whether that is the best to do; meet people, go to places - without wondering whether you will enjoy them.
Even if these things turn to be, well, not-so-awesome, you will still feel better than if you simply decided to stay on the safe side and skip taking a chance.
Science has proven it. But more importantly, I am giving you my word. Get wild. Feel happier!