Find and meet up with people who are doing things that you are interested in doing.
Advice for people in their early 20s - Zen Habits
Find people online doing interesting things, meet up with them in real life. Find people who are passionate, who are building things, who are pushing themselves, who dream big, who are mindful and joyful and healthy and friendly and shy and gregarious and adventurous and curious. Befriend them. Be there for them. Be helpful. Make them laugh. These are your people.