My favorite quote is, "The surest way to make yourself miserable is to wonder if you are as happy as you could be." Live in the moment, and enjoy the people and events in your life. They are there for a reason. Invest the time to find out.
Some times things have been said that have hurt. They may not have made any difference to you, but it hurt me. I will feel it for a lifetime... how you told me to be quiet and get away from you. I will never forget it.