The striker has kicked off the season in impressive goalscoring form.
"My mindset is always to be victorious, to win the match," he tells Chelsea magazine. "When we go to the pitch, that's all we want to do – we want to win – and when the game finishes, if you win, you go home happy.
"If I lose a game, it's a different frame of mind when I finish the match – I go home and I feel upset. So you always have to know that you are going to leave everything on the pitch, every drop of sweat, to help the team win the game."
He also provides an insight into how and why he makes particular runs during a game.
"Sometimes, I don't even make the runs for myself," he says. "I have to make runs to free my colleagues, so they can be in a better position to receive the ball.
"Also, I try to move a lot, I try not to stay static, because in the Premier League if you stay in one particular place, the defenders are very quick, very strong, and they can mark you out of the game easily."