What we think about is what we will feel later, if we think hard when we do it, it will feel heavy. If on the other hand, thinking is easy or can be done, of course when it is implemented it shouldn't feel difficult. like those who like fishing, because they don't feel heavy waiting for bait to be grabbed by fish, of course they don't get tired all day at the beach. Likewise with trading, if you don't feel it is hard to be disciplined, trading must be done according to the plan that has been outlined.