Villas-Boas admits he has some rebuilding to do in his new job at White Hart Lane, but concedes he must do it in a more controlled way.
"There are changes which have to be done, but I think that I won't promote that change as aggressively (here) as I did at Chelsea," Villas-Boas, who replaced Harry Redknapp last month, told a press conference.
"When things were going along smoothly, everybody is happy and you are able to progress it.
"When you are faced with a setback, it's the ability to bounce back from that setback that will keep you right on track.
"Chelsea had three negative results in a row last year, which had a tremendous impact, and when we wanted to correct things, we were always putting the fire out and never establishing what we were before.
"I think it's best to go for a progressional change. We have to respect what has been built here by Harry and hopefully I can do exactly that."