I can still remember my mom driving me to the match. I was working through all the ideas I could to get ready for the match. I remember as we warmed up trying to focus on the patterns that the ball stripes made as it was coming over the net at me. (A Gallwey exercise) During the match, at some critical moments, when things could’ve gone either way, I remember returning to that exercise. Trying to focus on the patterns of the spinning ball. I still use this “focus” exercise all the time.