I would definately start with Self-Esteem Supercharger. This tape is an amazing foundation for any other paraliminal you use.

After the 2 week period the instructions suggest, I might go on to New Behavior Generator to model someone for the selling and public speaking issues.

Give Self-Esteem a fair shot and then tell us about your progress. Personally, I like this tape and I've had good results with it - I hope you do to!

Mike