Take a risk
Definition 1 of 1
Pro Tip 1/3Context Matters
Understand if it's business, personal, or play. Risk levels vary. 
In poker, she often takes a risk, unlike in her business decisions.
Pro Tip 2/3Idiomatic Usage
'Take a risk' is often used in motivational contexts, encouraging boldness. 
You'll never know unless you take a risk and try.
Pro Tip 3/3Risk vs. Reward
Consider the benefits alongside the possible negative outcomes. 
He took a huge risk moving abroad for the job, but the reward was worth it.