The seven-time world champion is yet to take a podium finish since he joined the Italian team but he has praised the "passion" of those he is working with and is confident they will find success eventually, despite no Grand Prix wins this year.
He told Sky Sports: "We all need to take responsibility in this team.
"We all need to play our part. And I know that there's so much passion in this team, every single member of this team.
"I'm incredibly grateful for the extraordinary effort every single person back at the factory continues to put in week on week. And actually, knowing that the team is Ferrari, there's always a huge amount of attention, not always in a positive way, but we're all fully committed to turning this around.
"And I'm fully committed to helping this team rebuild and grow. Every opportunity, every challenge is an opportunity for us to grow and learn, and I firmly believe that we will get to where we want to be.
"I think there's great harmony within a team, even with all the ups and downs that we've been having.
"And I just think everyone's just focused on taking the learnings from this year to build on a better future."
Lewis admitted he has been living a "nightmare" this season with his results, which have left him trailing in sixth place int he Drivers' Championship, 66 points behind his fifth-placed teammate Charles Leclerc.
He said: "It was difficult at some points during the year.
"I feel like I've surprised myself in terms of resilience. I still feel very positive, very determined, dedicated to the challenge we have.
"I see every challenge we have is an opportunity to learn and grow. It has been the most challenging year and definitely not the year I would ever dream of, especially in your first year at Ferrari.
"We take the learnings from every weekend. I feel like we will grow on to something better in the future.
"I firmly believe in the decision I made to come here. I back my team 100 per cent and myself 100 per cent.
"It's not been a good year for us but there have been so many learnings. Personally, I've grown so much this year. I stand here stronger than I have ever been, dead set on trying to finish off strong in these last few races."
