Long before SKOOL was invented there was a thing called a "group" within Yahoo. There were a number of investing / trading groups. I clearly remember, when I joined one, several folks who were successful at the time, told people they had lost thousands and thousands, sometime hundreds of thousand before they became profitable.
Lance Bernstein was losing money for more than a year while training with the best in the industry.
John Carter was losing in the beginning. If they could not make it work right from the start, why we believe we can?!
It's amazing how easily we (myself including, of course!) put our VERY HARD EARNED money on the line without ANY proof whatsoever we can be consistently profitable.
I guess we ALL know that most brokers offer what is called Sim or Paper or Demo accounts made available to us free of charge or for a nominal fee so that we can learn and practice and hone our skills without risking real money.