Stekelenburg now eyes some consistency from the team under new manager Rene Meulensteen.
"It's been really disappointing but that's in the past and now we've got three points in the bag, confidence is high," he told the club's official website.
"It was all about the good performance, too, and now we have to take that into the next game against Everton.
"The philosophy under Rene Meulensteen is still the same and the last two games have been really good. Now we have to keep on performing like this every week."
Fulham travel to Goodison Park in the Premier League on Saturday.