ruin your chances (of something)
idiomPart ofruin
ruin your chances (of something) — idiom
1. To destroy the possibility of achieving something, especially through a mistake
1.idiom
Definition
To destroy the possibility of achieving something, especially through a mistake or bad behaviour.
Example
Ari knew that arriving late for the interview would ruin his chances of getting the job.
The player's injury just before the final match ruined the team's chances of winning the championship.