The criticism I received only served to make me a stronger person.
The style is the same at all levels, which facilitates things: bring the ball out from the back, keep possession, work gaps to create chances. It's like that from the Under-15s all the way through. That's the Spanish way, and it has triumphed.
The biggest thing for me is that I've managed to work through some difficult times, and those moments always make you stronger. It makes you a stronger person and a better player.
It certainly helps that I'm quite a relaxed guy and I take things in my stride, and if you hear the odd murmur of criticism, you just stay focused on your job and doing what you're working hard to do. I've always been confident in my own ability, and that's just as important.
As a goalkeeper, I'm well aware that any mistake can be magnified by the fans. But it's true that here at Manchester United, there's added pressure.
I have worked hard in the gym lifting heavy weights and doing a lot of exercises.