have/lack the courage of your convictions
lack the courage of (one's) convictions
To not have the confidence to act or behave in accordance with one's beliefs or ideologies, especially in the face of resistance, criticism, or persecution. The governor was presented with a bribe to help the corporation avoid regulation, and she accepted it because she lacked the courage of her convictions.
have the courage of your convictionsact on your beliefs despite danger or disapproval.
1998 Times The knives were out for us and we had to have the courage of our convictions.