Do the following exercise
What should you eat and what you should not eat. Make a list and follow that to the core. Sometimes body does not accept certain types of food. Yet, we try to eat the same food again and again. Instead you have to prepare a list of items which you can eat and list out all those which your body does not accept. When you prepare the list you are giving a commitment to your body and you need to follow that.
Another thing is that whatever ways you behave outside we behave in the same manner with the body too. “I should not say this because the other person will be wounded”. Thinking like this, to please him, we tell a lie.