lack the courage of (one's) 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.
See also: conviction, courage, lack, of

have/lack the courage of your conˈvictions

be/not be brave enough to do what you believe to be right: You say that cruelty to animals is wrong, so why not have the courage of your convictions and join our campaign?
See also: conviction, courage, have, lack, of