The Uruguay international has returned from a 10-match ban for biting Chelsea's Branislav Ivanovic in fine form, leading the English Premier League goal-scoring charts with 20.
Suarez has been banned for biting and racial abuse during his time in England, as well as accused of diving.
But the 26-year-old striker said he was improving his attitude after developing an image he felt was not him.
Suarez told ESPN: "My temperament, attitude, desire and hunger when I am on the pitch has always been like this and will continue to be this way, I now know I have to control it more.
"An example of this was about two weeks ago when I had an open shot at goal and hit the post and it rebounded close to my hand and I was about to go for it and then I stopped.
"If the same thing had happened two months ago I would have gone for it. These things stay with me but I tell you I am changing.
"I am improving my attitude on the pitch because I know I was wrong in the past and I was creating an image of myself I know wasn't me."
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