This is one of my favorite all-time quotes:

Rabbi Mordechai of Lekhivitz used to say, "If things do not go the way you wish them to be, you should then wish them to be the way they are in reality."

This means we need to accept reality and find our joy in life within that.

Today, find a good time begin a program whereby you repeat this thought every day. Repeat it many times until it becomes part of your thinking. Mastery of this attitude can transform a person's life.