Since we already have the capability of asking perpetual questions, and since we can use any question, I recommend one that produces positive emotions rather than negative. The question is:
"WHAT GOOD HAVE I BEEN IGNORING?"
Let your mind have a field day with that question, and all you'll get as emotional fallout are feelings of happiness and gratitude and pleasant surprise.
When you look for something, you tend to find it. This question makes you look. You'll realize someone has done something nice for you and you didn't really notice. You'll remember a great time you had a couple weeks ago — and realize you hadn't thought of it since then. Your mind will be attuned to good news. The question sets your mind to be on the lookout for it, so you'll notice and respond to news about how this lake got cleaned up or that disease now has a cure.
The question not only directs your attention to a healthy category, the question has the same perpetual quality as questions you have used to drive yourself crazy. It is perpetual because even after you've answered it, you can ask it again. That's not true with other kinds of questions. Once you've answered the question, "What did I eat today?" the question is complete and asking it again would just be silly.
But you can ask yourself what good you've been ignoring, and you will always be able to find more. Having your attention on the good is relaxing.
Adam Khan is the author of Principles For Personal Growth, Slotralogy, Direct Your Mind, and Self-Reliance, Translated. Follow his podcast, The Adam Bomb.