Ahead of tonight's Champions League clash with Inter Milan, the 30-year-old said: "I'm responding by doing what I've always done - by looking straight ahead. I've got broad shoulders and nobody's going to knock me out of my stride.
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"Absolutely nothing will change. I've already admitted that losing the captaincy hurt but that's in the past and all I want to do now is move forward and carry on giving my best for England.
"I'm on a mission and nothing is going to distract me. I want to win the Champions League and Premier League for Chelsea and help win the World Cup for England.
"I'm not ashamed to say it, I wouldn't be John Terry if I felt any differently."
Footballers' behaviour has been in the spotlight again this week, with lurid revelations about the private life of Terry's Chelsea team-mate Ashley Cole.
The captain, though, thinks players should be judged by what they do on the pitch.
"People talk about setting an example - and believe me, out on the pitch, that's all I want to do, whether it's for Chelsea or England," he continued.
"I firmly believe fans want to judge me on the one thing I expect to be judged on - my football - and that's all I could ever ask for."
Terry also revealed he uses Chelsea's Champions League heartache from 2008, when he missed a crucial penalty in the shootout against Manchester United, as motivation.
He added: "There's a shirt on my wall at home - the shirt I wore when I missed that penalty. It's there as a daily reminder to me of what I'm striving for.
"I won't rest until it's replaced by a winner's shirt - that's my pledge to every Chelsea fan who has stood by me and still believes in me as a player and as their club's captain."