You seem to be focusing on mental stress with mental remedies, however the best remedy for mental stress is physical remedies. The mind reacts to stress as if you’re being attacked, and the historical remedy to being attacked is to fight (flight, or freeze, but those just get you killed). So to remedy mental stress, go do something physically demanding. Run, scream, punch stuff (safe stuff, like a punching bag or a pillow). Simulate what you’d be doing during the “fight” response.