Choose a place you like to go to. Then pick friends who like to laugh and ask them to come with you to this place. Being there and being with people who face life with wit and perspective in that wit will revitalize you and strengthen you. It will make you forget your woes. It will be cleansing and keep you in the mood for joy, first, and creativity (which is what wit is).
So one way to keep your “juice” flowing, is to be around people who make you laugh and whom you make laugh. It will feel like a celebration.