I certainly agree that one should accept things that one cannot influence and be at peace with them. Railing against the unchangeable is insane. As is a never-ending thirst for more power over others. Judged by their actions, most senior politicians are quite insane, so being content with one's lot would not enter into the picture.
Mueller's witch-hunt never was about getting at the truth behind Russiagate, but has always been about “getting Trump”.