I did not have to prove anything to people who doubted me, just to my team-mates and to Barcelona. The best thing is to do it on the field, with victories, with goals. But more than the goals is winning matches.
In my second season at Tottenham, things didn't go as I wanted but I accepted the offer from Chinese football and there I recovered my confidence and I won titles.
I have always been very calm and with all the triumphs I have had I have always been sure to thank my colleagues and take things in a humble way. It is only because of this humility that I have achieved so much.
I've always looked at what Lampard does, and to me is a huge phenomenon - the way he hits the ball, what positions he takes up - he really is incredible.
When I went from Tottenham to China a lot of people said that was it, my career was over. I had a couple of other offers at the time but they were both loans and I would have had to go back at the end. I just wanted to play.
In Lithuania they had racially abused me, in Poland they hadn't paid me, and I thought: 'I don't need this.' I said to my family: 'I'm not playing football again.'
In a year with him I played in my position two or three times and I played well. But that's not to say that I had a problem with Pochettino. It was his decision.
You are told before coming to Europe that big teams here quite often rotate players. I respect this culture but it is instinctive for me to get annoyed if I don't play every game.
A lot of people felt it was difficult for me to come to Barca because I was playing in China. Nevertheless, I have achieved my dream and I am enjoying each day.
You have to go to sleep at night staring at the wall, thinking, 'Damn, I can't wait for it to be morning so I can have the ball at my feet again!' You can only play your best football in these conditions.
I left Brazil at 17 years old in order to give my family a better life, but when I returned home two years later, I was completely disillusioned with football.