Just today I was surfing Amazon and I saw Transforming Negative Self Talk by Steve Andreas. I can't tell you how highly I recommend this book. Incredibly useful book with many many different exercises that are incredibly useful in transforming self talk!!
Below I'm including a link to Amazon. I am an affiliate with them so every time you buy something from them using one of my links they will give me a commission. It costs you absolutely nothing and helps me support my book buying addiction.
This is THE best book on transforming Self Talk that I have ever come across. I have gone to thousands and thousands of dollars worth of trainings and never once have I received as many useful exercises for transforming negative self talk as this book offers!