Psalm 139:13-18, 23-24

For you created my inmost being; 
you knit me together in my mother’s womb.

I praise you because I am fearfully and wonderfully made; 
your works are wonderful, 
I know that full well.     

My frame was not hidden from you 
when I was made in the secret place. 
When I was woven together in the depths of the earth,

your eyes saw my unformed body. 
All the days ordained for me 
were written in your book 
before one of them came to be.

How precious to me are your thoughts, God! 
How vast is the sum of them!

Were I to count them, 
they would outnumber the grains of sand— 
when I awake, I am still with you.

(23-24) Search me, God, and know my heart; 
test me and know my anxious thoughts.

See if there is any offensive way in me, 
and lead me in the way everlasting.

There is a reason that we are given the example to ask God to search our hearts. Because we are incapable of successfully dealing with what we find. Searching our own hearts can only make us depressed

On the other hand He can heal all wounds. He is not constrained by time; He can go back and heal wounds from years past. He knows us. He knows how to lovingly challenge our idols. But we must be willing to respond with obedience to what we hear.

Search our souls O God that we may honor you that we may be clean temples where your glory can dwell.