Examples:

• Despite his initial excitement about the promotion, a prick of conscience made him reconsider taking credit for a colleague's work.
• She felt a prick of conscience every time she walked past the homeless shelter without offering help.
• After lying to her friend, she couldn't shake the prick of conscience that followed.
• Even though he was angry, a prick of conscience stopped him from saying something he would regret.
• The prank seemed harmless at first, but a prick of conscience made them confess.
• She was about to submit the plagiarized essay when a prick of conscience made her delete it and start over.
• He felt a prick of conscience when he saw his sister crying over the broken toy he had secretly damaged.
• A prick of conscience led him to return the wallet he found instead of keeping the money.
• Despite being tempted to cheat on the test, a prick of conscience held her back.
• He couldn't enjoy the stolen goods due to the constant prick of conscience.
• After the argument, a prick of conscience made her apologize to her friend.
• She felt a prick of conscience when she realized she had taken more than her fair share.
• The thought of his mother's disappointment gave him a prick of conscience, preventing him from sneaking out.
• He experienced a prick of conscience when he saw the disappointed look on his coach’s face.
• Despite his bravado, a prick of conscience made him admit his mistake.
• A prick of conscience stopped her from spreading the rumor she heard.
• He was about to skip his volunteer shift when a prick of conscience made him show up anyway.
• She felt a prick of conscience for not standing up for her friend when they were bullied.
• A prick of conscience urged him to donate some of his earnings to charity.
• After seeing the consequences of his actions, a prick of conscience made him vow to change.
• The picture of the dead Syrian boy lying face down in the sand on a Turkish beach pricked my conscience.