The France attacker has battled for consistency in his first season at the Nou Camp.
But the €120m signing from Atletico Madrid told Sport: “I want to be someone important on the team, on the field and off the field. Enjoy soccer and help my teammates win all the games.
"On a personal level, the break came in handy, I needed to rest. It had been 5 years since I had so much rest, mentally and physically I have been doing well. I have been able to enjoy the family and now I am ready."
Griezmann feels the return of Luis Suarez is a huge boost for their title chances.
He added: "Luis is 9, a scorer, the one who makes the difference in great games with Leo (Messi). We have missed him and it is a great joy for us to have a player of that level and he will surely help us."