Jeremiah 17:9 says:
The heart is deceitful above all things, and beyond cure, who can understand it?–Jeremiah 17:9
Have you ever pondered how depraved you are, how desperately sinful you are . . . my suggestion is to look at Who it took to remedy humanities’ situation, a hint The God-Man, and this will provide a glimpse of apprehension of how deep and ugly our hearts really are.