Chelsea's poor run of results has coincided almost exactly with a similar slump last season which became a malaise that ultimately cost them the Premier League.
Villas-Boas insisted that was a motivation for his side rather than a millstone around their necks.
"When things don't go our way, we can't be happy with what's passing," he said.
"This week that has passed, and the results we have been getting, doesn't hurt our confidence.
"There's a good spirit in the group. There's a negative momentum we are passing by.
"We want wins as soon as possible. We went past a bad period and bad momentum last year, and we want to avoid that again.
"The memory of that is bad enough to want us not to repeat it.
"But we're not questioning our quality or our talent."