gambling is mostly a game for fun and you don't really learn much from entertainment so i guess there aren't really much lessons that i have learned with gambling. although it has been helpful in some aspects like risk management and money management for me and coming up with strategies that are new and can help me have a better result in gambling. but nothing big and life changing yet!
Gambling itself is not meant to be a lecture to educate you of some indepth knowledge. However, it is a good opportunities to observe how others gamble. Some of them can gamble until they dont care about their loves one. From there, you can learn how to appreciate things especially those around you and this is very important lesson to learn.