The Spaniard has endured a miserable time in West London following his £50m switch from Liverpool, scoring just 30 goals in 118 appearances.
However, the 29-year-old said that he is working hard to improve his game.
"I want to do the things I used to do all my life," Torres told the Daily Mail. "I did them at Atletico, I did them at Liverpool and I am not doing them at Chelsea.
"I am working on it. If I knew the reason, I would fix it in one minute. But the only way to fix these things is to work at it.
"I am training every day and I will never, ever give up."
Torres bagged a brace in the Europa League victory over Rubin Kazan in midweek.