One moment that changed my mentality was the first time I went to Mali when I was six. Soon after that trip, Barcelona signed me, but when I was there I saw children like me, six years old, who didn't have shoes, while I had the opportunity to fulfil my dream. It shocked me. I was six and I didn't understand.
It was difficult at Villa because they'd struggled for two years and I'd come mainly from Barcelona B in the second division in Spain. I needed time to adapt but Tim Sherwood and Remi Garde had to win games; they didn't have time to think about little things about my game. It was a bad moment, it was such a hard, sad experience.
Barcelona is the best education possible. Training with Messi is something I will never forget - he was always the last off the pitch and working incredibly hard in the gym. If he is the best player in the world and works so hard, who are we? You can have all the crazy talent but you need to work.
Everyone knows what a good player Ruben Neves is and I have no doubt he could play for massive clubs like Manchester United, Barcelona or Real Madrid one day.
I almost missed the chance to join Barcelona because I was on holiday in Mali visiting my parents' family for the first time. We spent all summer there and every day Barcelona were calling my mother's phone and getting no reply because she had left it in Barcelona.
I didn't leave Barcelona in the best way but I took the decision to leave and I don't regret it. There were a few problems with the club - some misunderstandings - and so I decided to leave because I wanted to develop as a player.
Every player has a dream to play at Barcelona for a long time, but you have different roles for the team.
What I have learnt from my time at Barcelona is the invisible work that goes on off the pitch. It's about the fine details.
Of course many children are dreaming to play for Real Madrid, Barcelona, and Manchester United. I always just wanted to wear the jersey of Partizan, Newcastle, and Serbia.
I have followed Newcastle my whole life. I had two Newcastle shirts when I was little. It was unusual; most people choose a team like Manchester United or Barcelona, but for me, it has always been Newcastle.
