``Experts are not watching me. They don't know about my fitness. It's me who knows what's going on. It's me who is feeling it from inside. I know myself better and I am confident enough to do well in the World Cup in Sri Lanka,'' said Yuvraj on the sidelines of National Sports Awards function at the Rashtrapati Bhawan, here Wednesday.
Yuvraj Singh confident of doing well in T20 World Cup