Well, you can't, but the more you play with new ideas the more you get used to them. So maybe you play your games while thinking about positional mistakes. It even makes you play worse because you're so focused on it that you forget to do some basic things you always do. But after a few days, weeks, or months, you assimilate the ideas and can use them often without thinking. At that point you can move on to trying to assimilate something else.
And the more you know, the more other things make sense. So maybe the positional mistakes ideas don't seem to help you win much more, but when you move on to another topic you might find it makes more sense. Or you might revisit an old topic and it starts to make sense. Over time this accumulates until one day you'll "suddenly" be playing better. But you have to take it one bite at a time.
In chess, when I play a 15 0 or a 10 0 game I really get confused as there are lots of things from many lectures to consider that I end up remembering one theme from one lecture and playing around that. For example, If I watched a video about positional mistakes, detecting them, exploiting them etc.. then that would be the only thing in mind. I would forget about advantage transformation. There are lots of topics about positional play to the point that, If I wanted to excel at it early on in my chess career, then it would be pretty difficult. That being said, How can I solve this problem?