Think about the people in your life (family, friends, co-workers, etc.). Are they positive or negative people? Do they encourage or discourage you? Are they upbeat or always down in the mouth? When you're done speaking with them, do you feel lifted up or depressed?
Always remember that you can choose the people who you want to spend time with. Be around those that speak life, not death. Don't let others talk you out of your dreams just because they didn't fulfill their dreams. The people in your inner circle are the ones who can make or break you.