Ronaldo netted a hat-trick in victory over Malaga last night.
He said: "My ambition is always to improve every year and I'm at a club that guarantees that. We have the best in the world on this squad. That makes me happy and helps me be better.
"I think all football professionals are talented, but you'll never become a great player if you don't work on that talent. I always try to do that. I try to prove my quality on the pitch in games and training sessions. I always try to do things well.
"I didn't have any particular idols as a child. My ambition was to play for my national team because that's where the footballers I mostly followed played. I'm sure I used to do stuff I no longer do due to age or experience. I'm always ready to learn and I always try to improve."