There is great potential for you to be a very positive force in someone's life today: if you want to be. Get involved with other people as early in the day as possible: stick to groups, and you will soon see an opportunity where you can be of service to someone. And it's likely that your helping them will also help you, in the long run. What you give to others might not even be as great as what they give to you: but don't let yourself feel guilty about it!