I was awarded my purple belt in BJJ recently after years of training, and I wanted to type up a short post about the lessons I've learned and the merits of martial arts in general. Long-time lurker but new poster on TRP.
TLDR: I think that martial arts should be a staple of the TRP toolkit. Nothing tests your grit or develops your character like learning a real form of artistry from scratch and transforming your body and mind in the process. Lifting weights is awesome but learning to defend yourself and others is a fucking powerful feeling.
The most important lesson you'll learn from martial arts is self-reliance. Fundamentally, you are responsible for your own security. Learning to gauge and assess your surroundings is merely one level of self-reliance developed through a martial art; the mindset that adversity is something you can face head on will filter through to other areas of your life.
You learn that failure is not something to be ashamed of. Everyone fails at first when they step into the dojo. Through practice and determination, you improve; otherwise you stagnate. Feeling yourself progress in an objective way is an electrifying feeling. The same applies to seeing your lifts skyrocket in the gym, or seeing yourself successfully approach more HB8s. The proof is in the pudding, success is impossible without failure.
Success is earned through hard work and not much else. There are no shortcuts. Genetics and luck help, but hard work always wins. To progress in BJJ, one must show mastery of the art-form. Many BJJ masters were "losers" when they started training. They transformed their lives through sacrifice, enriching themselves and others. Your excuses are pathetic, start training.