"I am extremely ambitious and want to win every title."
The Portuguese wideman also revealed his ambitions for his national team.
He said: "I especially want to win the World Cup.
"For Portugal to get fourth place in Germany last year was not a failure."
And Ronaldo has backed England to go close at Euro 2008 next year.
He said "Germany, France, Italy, England and Portugal are the Euro 2008 favourites."