The thing that really baffles me is how on earth has nobody been able to get all this out of him before? You don't just become a superb, all-round player who can cut it at the very top overnight so I simply can't understand how he was allowed to drift around in the lower leagues for so long without anyone turning him into the beast that we know and love today.
Many years ago there was a player for one of the Sheffield clubs I think,who wrote a long thesis about exactly this.One of the central tenets of his analysis was the effect on the psychology of the player that random events have.
Take the example of a centre forward who gets clear of the defence with just the keeper to beat.He hits the ball goalwards and it comes back off the woodwork.Now,had he hit it two inches to one side it would have gone in.That two inches isn't measurable in terms of skill because no player,however good,can judge to within that margin of error. But HAD it gone in the effect on his feelings of competency are huge.
It explains how players like Torres can go off the boil,and also explains how players like Holt can gain so much confidence and self belief.I don't think that at the moment Holt would be out of place amongst the best.