Paul Tripp with some wise counsel on how we should talk to ourselves:
No one is more influential in your life than you are because no one talks to you more than you do. You're in an unending conversation with yourself. You're talking to yourself all the time, interpreting, organizing, and analyzing what's going on inside you and around you.
What do you regularly tell yourself about yourself, God, and your circumstances? Do your words to you encourage faith, hope, and courage? Or do they stimulate doubt, discouragement, and fear? Do you remind yourself that God is near, or do you reason within yourself, given your circumstances, that he must be distant? Do you encourage yourself to run to God even when you don't understand what he's doing?
Read the rest of his post here