Self-Esteem Supercharger to build confidence which shows to everyone whether you or they notice it or not.
Instantaneous Personal Magnetism to get that glow about you that shows people your character and helps you learn to shine more brilliantly. Showing people you are positive will definitely improve their acceptance of what you say.
Also, Natural Brilliance talks about breaking barriers and doing anything you want to do really (I have the book, not the course)
Photoreading can help with anything really. I recommend it to anyone no matter what.
The two paraliminals are the best I think, the other two courses are a larger investment, but with larger benefits also.