My biggest source of joy and happiness comes from my relationship with Jesus Christ. People here will all die eventually. Enjoy them as much as you can, but don't depend on them as your source of happiness. Material things can be lost, broken, stolen, worn out, and at the very end of your days, you can't take them with you. Jesus is eternal. No death. He took care of that. He's my rock, my shield, my fortress, my joy, my light, my life, and my healer. Being in the presence of The Lord rejuvenates me. I cast all my cares upon him, because he cares for me. I'm not trying to convert you, but He is my joy and could be your joy as well if you choose to make him so.