I do.agree  with this because mostly we get mistake with our own but at the end we actually realize what we are doing. Sometimes we can get lessons from our mistakes, there is always a saying that lessons learned when get mistake.
On the other hand,  it isn't  possible to make it profitable once because you are not always winning the game because  Mostly the game is relaying on the luck that could you win lot of profit . It isn't possible for me to make the gambling a profitable one