Billy Sticker argues that children need to learn positive self-talk, since most people's inner voice is negative and filled with lies. He recommends teaching kids to speak life over themselves and remind them what God says about their identity, grounding their thoughts in Scripture.
Chapters
The second thing is you want them to have good communication with themselves. Years ago I read a book called What to Say When You Talk to Yourself, and it's actually a pretty good book, because we are always talking to ourselves, and it's normally negative. And the last message I preached was on renewing your mind, and it was kind of on this whole subject, on, you know, if we're not careful what we're putting in, the enemy's putting stuff in. Amen. Like, you have to be conscious of what you're thinking about. But we've got to be able to— we want to teach them how to have good communication with themselves. And one of the ways to do that is to speak life into your kids, to teach them what God says about them.