Meditation, chanting mantras, affirmations are types of auto suggestion. Practising these can do wonders by helping you control your life in a positive way.

Autosuggestion is a psychological technique related to the placebo effect. It is a form of self-induced suggestion in which individuals guide their own thoughts, feelings, or behavior.

In truth, auto suggestion is the simplest and the most powerful of mind programming tools. It is one of those simple mind power techniques  that is easy, always accessible, can be done anywhere any time (even while driving) and requires no special skill or training.