Lotus F1 driver Romain Grosjean says sometimes you just have to accept it is going to be tough and get on with it.

Grosjean took six podiums last season with Lotus, but this year has been very, very different and with the woeful E22, the Frenchman has struggled to get into the points, let alone the top-three.

Indeed, so far he has only scored eight points - finishing eighth in both Spain and Monaco - and last time out in Hungary he crashed early on, notching up his fifth DNF of the season in the process.

"It is certainly very frustrating and it is certainly not where I wanted to be this year, especially after last year," said the 28-year-old, who ended 2013 on a real high, with four rostrums in the last six races as he assumed the undisputed role of team leader in the absence of the injured Kimi Raikkonen.

"There are always ups and downs, however," he continued. "If you look at Williams last year, they were really struggling and now [Valtteri] Bottas has had three podiums in a row. It is good to see that there is some fresh blood coming but you want to share the podium with them as well.

"So, yeah, it is frustrating - but on the other hand I really want to keep working and keep giving as many comments as I can to work in the right direction."

Grosjean also stated that it is only normal in every F1 drivers' career to have good and bad years, depending on what car you have underneath you.

"Certainly it is not very nice and certainly there is much less champagne [this year]! [But] if you look at Jenson [Button] and 2008, he was very much struggling with Honda and then it changed to Brawn - same team, but different name - and he was World Champion.

"Same for Fernando [Alonso], he has had very good years and difficult years. It is part of your career and you have to accept that.

"You mustn't get too frustrated even if sometimes it is hard because you are a competitor and want to win and want to fight at the front - you want things to go better. Sometimes they don't get better and all you can do is accept it is going to be tough and work from there."