search one's heart
search one's soul

Well, there was no need to search my heart, she had laid it open.

There is one place where we neglect to search - our heart.

Kirk stood in the fog and searched his own heart.

The day will come when you will search your heart for a way to change what has happened.

Every one of us searched his heart and faith before coming to a reluctant decision.

If she agreed to think about telling David the truth, she would have to really search her heart.

I can't live like this, and if you search your heart, I doubt you're really enjoying it either.

It may cause you to search your heart and take a long look at your soul.

"Dada, I ask you to search your heart with honesty and truth," he said to his image in the mirror.

It is now high time that the Council followed our example and searched its own heart.