When I am thinking of unpleasant things, I have found that listening to Abraham Hicks is helpful. While it is important to acknowledge and process our sadness, it is also important to eventually move on from those feelings. After naming what we are feeling (sad), then find a pleasant distraction. We can slowly learn to move on from sadness. When I have a bad day, usually, after a good night's sleep, I feel better in the morning. Praying that we can all move away from our sadness!
Abraham Hicks - Going General Is The Answer To All Negative Emotion