to suffer because of a bad decision or mistake
страдать из-за плохого решения или ошибки (stradat iz-za plokhogo resheniya ili oshibki)
"He burned his fingers by trusting the wrong person."
"Он обжег свои пальцы, доверившись не тому человеку." (On obzheg svoi pal'tsy, doverivshis' ne tomu cheloveku.)
To spend all your time studying
extremely accurate and consistent performance
to show support or appreciation by liking or sharing someone...
Someone who is very worried or upset.
to relax after a stressful or dangerous situation
to remain courageous and confident despite difficulties