Martial arts training obviously teaches you techniques, combinations, strategies and tactics of the art itself.
And if you train against resistance (like you would in BJJ, boxing, wrestling, judo, MMA, etc) then it’ll ingrain those techniques deeply enough so that you can use them in a real fight against a real attacker.
Which is great.
But arguably, the biggest effect of training is something else. Something more than technique.
Hard training over an extended period of time makes you more resilient, more tenacious, and more perseverant.
Even though the skills you’re trying to learn in jiu-jitsu are fiendishly difficult, you stick with them.
Even though it takes forever to get a belt promotion, you don’t quit.
You might get injured, but you come back.
That regular practice of stick-to-itiveness creates a tenacity that has carry-over to the rest of life.
If you can grind week after week on your half guard until it becomes your go-to position, then you can grind through that course you have to take at university.
Time spent suffering while learning how to escape from under people twice your size means that you can dig a little deeper when you’re facing that impossible deadline at work.
Sparring until your lungs burn and your fatigued hands feel like flippers makes you a little more able to keep your shit together when your colicky baby is crying for hours.
Keep on grinding in class, and when times get tough in the rest of your life know that you’ve already proven that you can keep on going when others quit.