It was a heartbreaking Sunday for the team at the Red Bull Ring, following Valtteri and Lewis' early exit from the race.
But, it's the difficult days that you learn the most from, and Lewis is sure the team will bounce back at the next race.
"Everyone in the team is really feeling the pain," Lewis explained after his retirement from the Austrian GP.
"But, I think you just have to look at it, we've had such great reliability for so many years.
"As painful as it is, and we are perfectionists, we really have to take the rough with the smooth.
"This is definitely the worst weekend for us I can remember for a long, long time.
"I have every confidence in my team that we'll be able to bounce back."