We are told that those who talk to themselves are crazy. And yet, my guess is that most of us do talk with ourselves. The Bible has a few examples where the Psalmist preaches to himself, seeking to engage Himself with God. Consider the following examples.
Bless the LORD, O my soul, and all that is within me, bless His holy name (Psalm 103:1).
In this instance, the Psalmist is calling Himself to worship the LORD. Later in the Psalm, he reviews all of the wonderful ways that God’s grace has been manifest to us (which is his driving reason to praise the LORD.). Consider this example.
Why are you in despair, O my soul? And why have you become disturbed within me?
Hope in God, for I shall yet praise Him, the help of my countenance and my God (Psalm 42:11).
The circumstances here are a bit different. The Psalmist has found himself in a bout with depression. He has lost hope and is discouraged. His heart is grieving. Yet, his head is thinking correctly. He preaches to himself to hope in God. He is your help, even if you aren’t feeling it right now. He wants his heart to follow his head. And that’s why he preaches to himself.
So, go ahead and preach to yourself. Tell yourself of everything that you know is true of God. Trust that your heart will follow.