out of one's mind

It requires a skier to bomb a downhill then reset mentally for the precision of a slalom run, while trying to put whatever happened in the downhill out of one’s mind and “start slalom like it’s a new day,” Shiffrin said.

Most of all, they are both discomfiting because no matter how much one might try to keep it out of one’s mind, the autobiographical correspondences are too present.

That's the English expression for shell-shocked out of one's mind.

To attempt to move a brain to a new body given what is known about the medicine and science involved one would have to be out of one’s mind.

If one can contrive to put out of one's mind all that nonsense and observe with intelligence, one will find that the middle-class Englishman and the rich Englishman amuse themselves after very much the same manner as do the people of the poorer classes.