In his book Celebration of Discipline, Richard Foster says that joy comes from obedience. He also has this to say:
The spirit of celebration will not be in us until we have learned to be “careful for nothing.” And we will never have a carefree indifference to things until we trust God . . . . When we determine to dwell on the excellent things in life, we will be so full of those things that they will tend to swallow our problems . . . . The decision to set the mind on the higher things in life is an act of the will. That is why celebration is a discipline. It is not something that falls on our heads. It is the result of a consciously chosen way of thinking and living.
May we learn to love and enjoy God, others, and life!