13 years ago I was confronted with a situation that maybe you've also encountered or you are dealing with, right now. Because of exhaustion, I was obliged to reduce my practicing hours in some years, from 4 h/day to 2h/day. For the next years I've designed a method which worked for me and helped me not only to keep my level high, but also to obtain the same results, or even better. Later, I found that this method has a name - deliberate practice. The mental preparation has he