What do you do when you are in a negative mode?

Sometimes, I need a rest to refresh myself and get back my full energy. When I feel like that, I go jogging, play the piano, and taking a hot bath. We can't be in the negative feeling while exercising or playing instruments. Those activities help us to focus on the present moment instead of the past or the future. What do you usually do, when you feel you need to be refreshed?