Notes

@_Risk-taking_@

a risk-taker
daring (a daring escape (дерзкий))
to put your life AT risk
to throw caution to the wind
@I threw caution to the wind and bought the most expensive one (to do something without worrying about the risk or negative results)
to get yourself in a difficult/dangerous situation
to have a close shave
@I had a close shave this morning - some idiot almost knocked me off my bike (you come very close to a dangerous)
to dice with death (take serious risks)
to risk life and limb (и здоровьем)
to risk his neck (рисковать шкурой)
@My husband was willing to risk his neck to get us...
to thrive on novel and exciting experience (процветать на)
foolhardy (a foolhardy decision (авантюрное))
to seek out adventure
calculated risk (обдуманные риски)
@The director took a calculated risk in giving the film's main role to an unknown actor
to put money on smth (готов поставить на это)
@I'd put money on it

Playing it safe (осторожничаем)
cautious
to play it safe - перестраховаться
@To play safe, I'd allow an extra ten minutes, just in case.
to hedge your bets
to err on the side of caution
@to be especially careful rather than taking a risk or making a mistake:
25 people have replied to the invitation, but I've erred on the side of caution and put out 30 chairs.
to be averse to risks - возражать против

Other idioms
at the risk of doing smth (used before you say something that may seem offensive or stupid):
@At the risk of seeming rude, I'm afraid I have to leave now
@At the risk of sounding stupid, how do I send this email?
to run the risk of doing smth (to do something although something bad might happen because of it):
@If you tell him the truth, you run the risk of hurting his feelings.
to do smth AT your own risk