You will have to explain what you mean by " Focusing on a point some distance in front of you". Can you explain ?
and Yes Zone can be induced but not everyone can do it. It is not easy to do and some are good at it than others. I think in tennis, Confidence and being in great shape helps.
Babolat Pure drive 2012, 55 lbs, Kirschbaum Proline X / X-1 biphase. Nalbandian backhand and Nadal forehand.