The Bible tells us in Proverbs 17:22, Happiness is good medicine, but sorrow is a disease.
If we don’t constantly work on having a good attitude and think on good things (Philippians 4:8), instead of feeling happy and energetic, happiness is likely to get lost in our busy lives. Without happiness life can feel pretty empty and meaningless. Poor health will follow in a life without joy.
As Christians, we have a big reason to be happy. Our savior Jesus has given us a hope, through His willingness to die on the cross for our sins. He paid the debt we could not pay. How do you think He feels when we let the things of this world trump His ultimate gift of joy? I think Paul was telling us in Philippians 4:7, as Christians if we focus on Jesus we will have a joy that is beyond the understanding of the world and that peace (joy) within our hearts will help us maintain that joyful attitude in our lives. It is healthy both spiritually and physically.
Focus on one thing you will change in your life this week to be happier.