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.
It really is surprising just how much you can get from a very little amount of time. When I quit smoking (and even some of the times I unsuccessfully tried) one simple trick I used when I felt the urge was to simply say "I'll go in 5 minutes" and resume whatever I was doing.
Every single time it was 30 minutes, an hour, a couple of hours later that the next urge for a smoke returned. Moreover, I never really felt I was waiting in anticipation of that 5 minutes to expire.
Now, I don't think that is what ultimately accomplished the quitting but it did address one of the problems that will lead to not quitting.