Are there actions undone, words unsaid, gestures not yet made that you would regret not having done? What are they?
List them. You might start each sentence with ‘I will regret it if I don’t …’
Perhaps it’s a story you want to tell. Or a walk you need to take. Maybe there is a painting or a person to whom you must pay a visit. An overdue cup of tea and sympathy? An envelope that needs a stamp and a licking?
Can you choose one and take a small action that will soothe away a possible future regret?