The England international is regularly on the scoresheet for the Blues, but prior to Wednesday's clash had surprisingly gone 10 games without a goal for Carlo Ancelotti's side.
That meant the 31-year-old remained level on 132 goals for the club, however, his strike against Atletico enabled him to move fifth in the club's all-time scoring charts.
Lampard admits his drought had started to play on his mind, although now he has snapped his unwanted streak he is hoping to be back among the goals in the coming games.
Mind games"It should play on your mind because you want you want to do it and if you don't put pressure on yourself, you won't be at the top," Lampard said of his goals drought.
"So it plays on your mind but you always have to be positive. You can't get too down and you have to understand you always have these patches in the season.
"It was nice to score and hopefully I can go on a run now. Hopefully I'll start contributing more goals and that will help the team.
"Jimmy Greaves was probably the greatest English goalscorer of all time and he did it in a lot fewer games than I have.
"It's a great honour to be up among these names and I hope I can keep pushing on."
Meanwhile, Lampard believes Manchester City's massive financial clout means they are serious contenders to break into the Premier League's 'big four'.
Everton were the last team to break the monopoly in 2005, however, rather than a one-off event the experienced midfielder sees no reason why City cannot challenge the pace-setters for years to come.
Threat"I think it is more under threat this year with the emergence of Man City and the money they have got," he continued.
"Every year one of the Evertons, Villas or Tottenhams do very well and everyone says it is under threat but normally the four rise to the top.
"I think Man City will be different, I think they will stay the course. If you spend £150million then you should stay the course.
"We did the same here six years ago and it wasn't easy in year one. Year two and year three is where you really gauge progress and I am sure they are looking at the same things we were at that time.
"They have bought players who have been there before. Individually, if you look at them - Carlos Tevez, Kolo Toure and Emmanuel Adebayor - they have been in very successful teams before anyway so I don't think that it is the issue.
"It is just the idea of throwing it all together which is not always easy, but they can do it for sure."