Cameroun striker Samuel Eto'o has been fired up by his hat-trick against Manchester United on Sunday and says he is fully enjoying his time at Chelsea.
The 32-year-old striker, who formerly played with great success at Barcelona and AC Milan, said on Chelsea's website: "At the moment we are still in practically all the competitions.
"If Chelsea are not the best club in the world then they are one of the best clubs in the world, so I don't know if we are going to win everything but the season is going well so far.
"I like playing and when I get the chance to do that I have to help my team-mates.
"There is a huge difference between English football and the other championships, you almost can't compare it, but I am trying to adapt very quickly and that's okay.
"The most important thing in life is to work hard. Football is a part of my life and I try to be happy all the time. That's why I'm always smiling. If my work allows me to be even happier, then that is great."
"The season is long, and there are a lot of things that could happen, but I hope to score more goals, help my team and then hopefully the season will end well for Chelsea."
The Chelsea squad had been given Monday and Tuesday off this week, during which time Mourinho underwent surgery on his elbow on Monday in Paris which is hoped will cure a long-standing complaint.