Every goal is hard work, especially in such an excellent league as the Bundesliga; or even take the Champions League.

[Didier] Drogba sent me a text message after I won the African Player of the Year award. It made me very happy.

We have our ambitions [in Dortmund Borussia], and of course I would love to win some titles after some years of finishing second or losing finals.

Last season I scored 27 goals but still lost out against Robert Lewandowski. This season has started very well for me, but again I have some tough opponents, most notably with Anthony Modeste from FC Koln. I texted him the other day: "Keep calm, my friend." I am happy for him to be so successful. And in a certain way it even helps me. The better the other strikers are, the more I have to work to be to be ahead of them.

I've played in France. There, in many matches everybody is already happy if he can secure a point. Here, in Germany? Forget it! Everybody wants to win. The last-placed team in the standings would take any match with the ambition to win it. That makes it so hard, even for the best teams in the league.

Only Bayern Munich really have some sort of a guarantee to win if they only catch a good day. All the others need really good days to win. I like that.

Didier Drogba and Samuel Eto'o, two fantastic African footballers. So successful. And very nice characters as well. I got the luck to know them personally. They helped me a lot.