Hunt for three good things a day and your eyes slowly change jobs, from security guard to scout.

Attention was built to scan for threats, which means the default setting is a lookout for what could go wrong. That setting is useful and also exhausting, and it quietly teaches you that your life contains mostly problems. What you practice looking for is what you get better at finding, and that works in both directions.

Try naming three specific good things at the end of the day, small and concrete rather than grand. The coffee that was right, the message that came at the right time. Do it for a week and watch how you start collecting them during the day, before the list is due.