put

I need to get some fresh air and put my mind away FROM (DOING) something bad.

Hi,

'Put my mind away from . . . ' is not an idiomatic phrase. Consider something like 'distract myself from . . . '

Best wishes, Clive

Thank you very much Marius Hancu and Clive!

Can I say:

I need to get some fresh air and stop thinking about the barber shop incident.

Once again, thank you

As long as your audience knows what it was that happened at the barber shop. (You can also say "that" barber shop incident.)

You may be looking for the phrase "clear my head."

Clive'Put my mind away from . . . ' is not an idiomatic phrase.

That might be the case. The New York Times only reports:

take/steer/pull/turn/keep my mind away from