Focus on the present moment! The reason only the present matters is that everything happens here. Everything you feel and sense takes place in the present. Anything you can change or create is possible in the present moment.
In this six minutes podcast Himani explains how you can free yourself from this pain by constantly living in the present. When you concentrate on the present, you don’t worry or regret it. Worry and regrets are simply the pain caused by resistance to the things you cannot change.

