Sometimes, people have life problems that can be entirely solved by doing one thing. (doing X made my life 0.1% better, PERMANENTLY!) These are not things like "This TAP made me exercise more frequently", but rather like "moving my scale into my doorway made me weigh myself more, causing me to exercise more frequently" - a one-shot solution that makes a reasonable amount of progress in solving a problem.
I've found that I've had a couple of life problems that I couldn't solve because I didn't know what the solution was, not because it was hard to solve - once I thought of the solution, implementation was not that difficult. I'm looking to collect various one-shot solutions to problems to expand my solution space, as well as potentially find solutions to problems that I didn't realize I had.
Please only put one problem-solution pair per answer.
Using duct tape to tape my floss to my toothpaste has moved my flossing compliance from ~80% -> ~98%
Look for how your body reacts when you're thinking about something you already know you dread doing. Same for when you're pleased about something. That will tell you what to look for.
80/20: muscles tensing up (jaw, neck, torso) is discouragement.