I really recommend shakti gawain. She does some really nice guided meditations and visualizations that focus on affirmations and also getting in touch with your inner child. I have tried it in the past and I have to admit it is pretty interesting and can be intense. It does take some practice to get good at it. Take a look at something like this..

Meditations: Creative Visualization And Meditation Exercises To Enrich Your Life | Shakti Gawain