Keep forgetting that a regular 9 to 5 job's physical and mental energy is different to trading. For example, if I were to make $300 in half hour in trading compared to making $120 a day on my 9 to 5 job, I would then think that I did not put much effort into it and get back in. Usually, my trade will not work out. FYI, I work 3rd shift.
WOW... the dumbest thing.. hard to pick one. But, I would have to say repeating the same damm mistakes not 2 times over.. .but more like 35 times... I have to learn the very hard way