You want to improve your concentration? Maybe your social skills could use a little boost? You suck at flirting with women and have been single for...? Do you struggle with motivation to finally move out and go to a gym?
YouTube has something for you. Try to type one of these topics and see thousands of videos on it. Either with a charismatic handsome guy or with fancy looking animations. They seem all to be similar to each other. Many also try to advertise some books and courses for a lot of money.
It's kind of an industry.
My question is: do they really provide much insight? Have they helped you in you life or turned out to be yet another way of wasting your time by sitting on a couch watching them for hours?