Those that do understand in Japan say it is very important to have the right mindset...you basically have to feel humble inside. Those that go off thinking about power etc are going to be in big trouble for sure...they can end up like some Stitch thing with all kinds of mental issues and confrontational problems. This kind of training can easily change your personality and not always for the best. Remember even Stitch went looking for a family...lol ^^
Pretty good advice in most of that post, but this section deserves highlighting IMO. I always wondered about people who say, spent hours on end on their own in a room practicing sumo stomps
with the intention of becoming unbeatable fighter, like Sagawa Yukiyoshi apparently did. It just can"t be good for your social skills, to say the least! I believe that this is one reason why a lot of solo training was practiced in the forms of calligraphy, dance, painting, tea ceremony etc. You were focussed on creating something beautiful that benefitted others.