A clear conscience always makes for a soft pillow.....
How much do we pay attention to our conscience? When our conscience isn't clear, we usually will be loaded down with fears, doubt, and lots of guilt.
When we renew our minds with God's words, our conscience is taught what the Bible says about what is light vs. darkness, truth vs. a lie, right vs. wrong etc.
The Holy Spirit uses our conscience to help lead us, teach us, and counsel us. If it is that important a tool, shouldn't we listen and pay attention to how and what we deal with every waking day?
2 Tim 1:3 I thank God, whom I serve with a pure conscience NKJV