Crook is your punching bag still helpful? I wish I had a trick to get rid of the thoughts but I have learned to live with it, I think it, I acknowledge it and I think of something I can do physically.. Usually for me its cleaning..
Maybe you can acknowledge it and say Ok this is how I feel right now but tomorrow its likely to change.
Do you have any plans for the weekend? Yes things are so different with Covid but having something to look forward too helps