How to take away the negative energy

I always have been interested in natural healing. Only because I believe in it myself fully and because I have seen the miracles when people with proper everything can go on with their life.

I have heard from one old lady years ago that the best way to take negative thoughts from other people who are jealous of you for example, is to wash (for 3 days) your face and hands with salted water. And had a bath with salt too.