Suarez has been widely praised for his discipline this season, where he has scored 23 goals in 21 Premier League games, and Tabarez insists that the striker has learnt from his mistakes.
"Suarez has always been a major part of Uruguay since he started in the under-20s," the Uruguayan boss said.
"He made the breakthrough in 2007 into the senior squad. He's developed and evolved a lot obviously in the time since - especially in his attitude and his competitive spirit as well as his skills.
"I put that down to what's happened to him in England. Maybe it's partly, or mainly down to all the problems he has had. He's come through difficult times. He's kept going when it was difficult. He has a strong head."
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