to be honest, i am disappointed in the celtics so far since they only won one game in cleveland. they really should have taken the first game as well. 
but as they have often done, once they took a large lead they sat on their heels defensively and on offense settled for too many long jump shots.
to beat cleveland, who is a very very good team, the celtics have to play very smart basketball. they have to play very great passion, and they must be totally dedicated to defense for the ENTIRE 48 minutes.
as long as boston plays as above, they are the better team and they should win in  games max.
and i made this prediction before the series began. 

go celtics!