The 26-year-old has been criticised over his recent performances but the four-time Ballon d'Or winner insists he is "full of energy" and looking forward to the rest of the season
Compatriot and former Blaugrana assistant coach Angel Cappa claimed earlier this week that the 26-year-old attacker has looked disinterested since returning from a hamstring injury and suggested that the four-time Ballon d'Or winner has lost his passion for the game.
However, Messi insists that he remains as motivated as ever and is looking forward to the conclusion of what could be a monumental season for both his club and country.
"I'm very well, full of energy and with a lot of hope," the Barca No.10 told the BBC. "I was able to play again after a long time.
"I'm happy with my current form and slowly but surely I will be getting there to hopefully peak at the right time of the year."
Messi added: "I hope this could be a great year not only for me but also for Barcelona and for Argentina."
The three-time Champions League winner also revealed that he still feels that there is a lot more to come from him in the coming years.
"Every season is a new challenge," he explained. "I still have a lot to learn and a huge deal to improve.
"With Barcelona we always play for major honours and we are always asked to win them all.
"I hope to keep performing at a high level all the way to the World Cup because we have a lot to play for with Barca, with a hard tie in the Champions League, and a very hard La Liga and Copa del Rey to deal with.
"I want to keep going and win everything."