to accept something unpleasant and continue
принять что-то неприятное и продолжать (prinyat' chto-to nepriyatnoe i prodolzhat')
"He had to grit his teeth and finish the job."
"Ему пришлось сжать зубы и закончить работу." (Yemu prishlos' szhat' zuby i zakonchit' rabotu.)
To do something in a different way from what is usually done
to suddenly stop communicating with someone online
to review a situation carefully before making decisions
to do something secretly or deceitfully against someone
a decision made very quickly without much thought
to improve your thought process or mindset