Hi Devi! Don't worry about the jitters. I almost turned the car arounded and cancelled the entire thing 15 weeks ago. I am not down 107 pounds from 403 pounds and feel great. Rode a bike today for the first time in many years. As for your friend just 3 days out, they are going through many changes physically and mentally as will you, don't worry, it will all be great in a short time.