Someone, at some point, realized that searching for a parking spot for an inordinate amount of time was not very productive. While it may not have been the person that felt this pain most often or the person that spent the most amount of time looking for a space, it was undoubtedly someone that knew the poor experience firsthand that came up with a solution.
Therein lies the birth of valet parking services.
Valet is an example of a simple problem being resolved by a simple solution. It's also a glaring moment defending the importance of self-discovery. At the end of the day, the creator of valet parking was trying to make his/her life easier first and foremost.
If you try to solve your own problems, it's likely others will benefit from the solution. That will forever be the best way businesses are created.