The English champions face Slovakian champions MSK Zilina in their opening game of this season's tournament tonight.
"We are coming here in a very good mood," said Cech. "We have been playing very well recently and we are ready to go in the Champions League.
"Last year we won the Double which is a great achievement but we couldn't progress in the Champions League, that's the way it is.
"The previous seasons we have always been in the semi-final and once in the final, but we all believe that this time is going to be the breakthrough. We all believe before every season that we can go all the way and win it.
"I believe that because of the work I can see every day at the training ground, starting with the manager and finishing with all the people working for the club.
"We always have the quality in the team and we have a great team spirit. That is the start and now we need to have the good performances on the pitch. We always have a good start. We know we have what it takes."