Wow... This was a roller coaster right here. But I'll try my best to answer this.
First of all, who says they had to give up their interests while they were unhappy? It made them feel better, didn't it? If it makes you happy, then continue to do it. Nobody said you had to give up your interests. You were just coping with yourself at the time. Though it had better be a healthy coping mechanism like drawing, writing, humming to yourself, etc. No self-harm here!
Secondly, some people learn social skills more challenging more than others. Whether you're being incredibly shy or just having some sort of social anxiety. One step at a time is what Balan would say. You don't have to pour yourself into the crowd all at once.
As for relapse, yes, it happens sometimes. Some people enter the Balan Theater more than once. And you better believe that Balan will be right there waiting for you to help balance your heart back.
You can't let change slow you down. Sometimes change can be good. Though you may have some rough times in your life, who doesn't, Balan will give you the willpower to keep going. Lance, on the other hand, might slow you down by giving you a place where you'll never be afraid, and nothing will ever change.