The Catalan giants clinched the Primera Division title, their seventh in the last 11 years, at the weekend with Messi’s goal beating Atletico Madrid in a 1-0 triumph at the Vicente Calderon stadium.
Now Barca are taking aim at the Copa del Rey final on May 30 against Athletic Bilbao before turning their attention to the Champions League final against Juventus in Berlin on June 6.
Messi has written on his Facebook page: “La Liga title is very special as it always rewards the best.
“But this team is incredible and still wants more this year. Forca (strength to) Barca!”
Messi has scored 54 goals in 54 appearances in all competitions for Barca this season.
Barca and Messi have the possibility of winning a second domestic and European treble in the space of six years.
The Catalan giants, coached by Luis Enrique, have won 30 league games this season and end their domestic league campaign at home to Deportivo La Coruna on Saturday.