You question yourself all the time as a footballer. You have to focus on the positives.
I've had more ups than downs in my career. All you can do is keep working. You still have to take enjoyment out of what you're doing, and things will turn, and my smile has always been there. In good moments and bad.
Out of all the clubs who were interested, I got the feeling that, deep down, Chelsea showed that they really wanted me. There were lots of reasons I came to Chelsea. They showed a real desire to get me to come here. I didn't have to think about it too much.
For me, it's easier to play with my right foot. It's simple. If I go right, I see Diego and have different solutions: I go alone or pass to Diego, or the midfield can join in. If I go the other way, the cross with my left foot is not good.
My first trophy in France was the Young Player of the Year. I was 17. Chelsea is not just one player. It is not only me. We have signed a lot of players. Now we have some good signings like Cesc Fabregas and Diego Costa.
Deep down, I never wanted to see Mourinho fired. We experienced some very beautiful things together in 2015.
The directors told me they were going to recruit good players with whom I could play decent football. Marko Marin, Oscar and me, we like to have the ball at our feet. Juan Mata likes the ball; so does Ramires.
I don't need to speak about N'Golo; everyone knows about him. He's everywhere. I think, sometimes when I'm on the pitch, I see him twice. One on the left, one on the right. I think I'm playing with twins!
The more you play against teams and defenders, the more you get to know them. You know if they are more nervous; you know, on the pitch, people are different. I try to adapt to their character.
Jose Mourinho and I get along well. I've lots of respect for him. He gives me a lot of confidence. After a bad game, he dares to say, 'We have played with 10 today,' but that's it. At moments like that, he leaves me alone.
I've always been clear - I feel good at Chelsea. Every week, I repeat the same on PSG. It's a big team but an inferior league. I don't want to return to France, because I've won everything over there - the league title, cup, best player, best young player.
I have always been small, so defenders have always been taller and tougher than me. So that's difficult for me; they foul me sometimes, but there you are - that's what the rules of the game are for.