"I learned so much about myself last season and feel better for that experience now," ESPN quotes Torres as saying. "I'm playing much more for my club and you can see that I'm starting to score more goals and play better.
"I am a different type of striker than in the past. I created a lot of chances for my teammates last season and it means my game is more complete at this point in my career. To play in a new Chelsea team and still have something to aim for with Spain is exciting for me."
The 28-year-old moved to the Blues from Liverpool last January for £50m.