Toto Wolff says it has been like "Groundhog Day" for Mercedes during a difficult 2022 Formula One season.
The Silver Arrows' run of eight consecutive constructors' titles appears to be coming to an end as they are third in the standings behind Red Bull and Ferrari.
Mercedes have not won a race this year, with George Russell fourth in the driver standings and Lewis Hamilton back in sixth.
Having dominated the sport so long, the Brackley-based team have struggled to adapt following the introduction of new technical regulations.
Mercedes team principal Wolff says it has been a rough ride this season.
"The truth is, it's just so painful and it's so difficult to live by your values and your doubt," Wolff told Autosport.
"You oscillate from depression to exuberance, and then the next day the other way around. And in a way that when you kind of think nothing that you do works, [it is] a bit of Groundhog Day.
"Then you make steps forward by looking at things and finding out they don't function at all, and then you know what doesn't go, and you go the other way and it functions.
"All the things I've preached, all the things that you read in books that it's so hard, that it is so important to lose in order to thrive. It's just lived in real life so far."
The F1 season resumes with the Belgian Grand Prix next week following a break.
Hope you're enjoying the break, Boss pic.twitter.com/IRUfhjaPIx— Mercedes-AMG PETRONAS F1 Team (@MercedesAMGF1) August 16, 2022