Cole declared: "We felt like we were really back but it is only a start and we are not going to get too excited.
"We have set the standard now and we have to keep winning. We have never had doubts it would come good but we need to do it again at Bolton on Sunday. I think we found the extra five-10% we needed at Valencia.
"Those guts and togetherness are why we have had so much success. I love playing for a team like that. It has been a similar situation to when we went down at West Ham but it is a different kind of pressure.
"You have to learn from your career. At West Ham there were people blaming each other but it is not like that at Chelsea. It is like you are 11 brothers on the pitch fighting for each other,. That is what Chelsea are all about and what I play football for."
Cole added: "When Didier plays like that he is unplayable. He is the best In the world. Playing with him is a dream because you get balls off him, you know when you get the ball wide he is going to get on the end of your crosses, he runs the channels and does the work of two players."