Do I seem stupid? Please help me?

I don't how I can spend my spare time productively. I'm about to start college in the fall and I have to find out what I want to do with my life. I think I am fairly intelligent, but I have commitment issues when it comes to reading or learning a new language. It drives me crazy because I want to be sophisticated and cultured. I'm definitely not extroverted, because I have trouble connecting to people. However, when I volunteer at one-time events, it makes me feel good. I do love listening to music, though. Oh, and computers. I would finish an artistic piece, though, but I don't commit to doing any more pieces. I do love word searches, but I feel they're a waste of time because they're not productive to me. OMG, please help?!