Other people strategy may not work for you and not suitable to you for whatever reasons. So, this point is true. You have to seek for the best strategy that suits your "trading style", not just a strategy that gives you a big bag but it doesn't learn you anything rather than just follow the up tutorial and once the case is not included in the tutorial, you will be fucked. That's what I have been witnessing so far.

Tons of strategies but some of them may not suitable for you