take your life in your hands

take (one's or someone's) life in(to) (one's) (own) hands

To do or engage in something risky that could result in the loss of one's or someone else's life or livelihood. I felt like I was taking my life into my own hands climbing up the rickety old structure. Are you sure you trust these tour guides? They're taking our lives into their hands out here in the wild.
See also: hand, life, take
Farlex Dictionary of Idioms.

take your life in your hands

or

take your life into your hands

If you take your life in your hands or take your life into your hands when you do something, you take a lot of risks when you do it. A rider who does not know the road takes his life in his hands by cycling in the dark. You take your life into your hands just crossing the road in this city.
See also: hand, life, take
Collins COBUILD Idioms Dictionary, 3rd ed.

take your life in your hands

risk being killed.
See also: hand, life, take
Farlex Partner Idioms Dictionary

take your ˌlife in your ˈhands

risk being killed, injured, attacked, etc: You take your life in your hands if you let him drive. The reason that his photos are so good is because he takes his life in his hands to get them.
See also: hand, life, take
Farlex Partner Idioms Dictionary
See also:
  • take (one's or someone's) life in(to) (one's) (own) hands
  • take life in hands
  • cannot for the life of me/him/her/us/them
  • can't for the life of me
  • mix business with pleasure
  • give (one's) life
  • look on the sunny side (of life/things)
  • sunny
  • not give a stuff
  • the light of (one's) life