Inzaghi will be out six months after undergoing successful surgery.
"The secret is passion," he told UEFA.com. "The passion for what I do, the fact I still enjoy myself like a teenager, the fact that there is still a strong desire to play and I feel such affection from those around me all helps me to work better.
"I have the best job in the world. I think that is what youngsters should learn from me. I try to enjoy every moment, all the way.
"Perhaps this is why at the age of 37 I still get to experience emotional nights like the one against Real Madrid."