to become stronger and more resilient, especially emotionally
стать сильнее и более устойчивым, особенно эмоционально (stat silnee i bolee ustoychivym, osobenno emotsional'no)
"You need to toughen up if you want to handle criticism at work."
"Тебе нужно таффен ап, если ты хочешь справляться с критикой на работе." (Tebe nuzhno **taffen ap**, esli ty khochesh' spravlyat'sya s kritikoy na rabote.)
to not feel confident or certain about something
to organize or arrange actions in cooperation with others
to spend your childhood in a particular place or culture
to remain strong and not give up under pressure or doubt
to finish work and mentally leave for the rest of the day
to improve by reflecting on what has happened before
