What is a mental trick you use personally to snap out of a bad mood or negative thought pattern?

When I need an instant shift, I create a new perspective/story around it. For example, if I'm in a bad mood from something like "woke up and my neck is tweaked ugh", imagining that the usual is neck tweaked means "it's not worse than usual". 

plus makes easier to appreciate a "good" day when waking up and no pain

Dev. Writing "The Marketing Compass" newsletter, themed around marketing from first principles to help fellow devs learn to attract users and customers

not sure if curse or an opportunity to practice

Ken, I actually woke up with a tweaked neck.