"The happiness of your life depends upon the quality of your thoughts."
Just another shorter, less personal way of saying the same thing I said yesterday. If we focus on the hurts, the negatives, the things beyond our control those thoughts produce fruit in the attitude of our hearts and restrict our capacity to enjoy life.
If we want to be joyful then we must focus on the things we are thankful for, our blessings, the love of Jesus for us. To paraphrase Bill Johnson, "when we have a problem in our lives we don't deny it's existence, we simply deny the problem a place of influence."