I think what you're going though sounds like you're feeling directionless. I agree with you that having a purpose is important. I once heard a quote -source unknown. "The only thing a man is entitled to is the fruits of his own labors". I would encourage you to take on some volunteer activities. Contact the local United Way who will help set you up with an organization that needs help and may be of interest to you. If you don't click with that opportunity, there are hundreds of others. Giving money to charity is one thing, but investing your time, sweat and energy is a whole different way of giving back. For some people volunteering helps put life into perspective and not only keeps us humble but makes us thankful for what we've got. Good luck!