Heyam Duhkham Anagatam
We live in time and perform actions. The actions lead to results which lead to further actions.The chain link continues since the birth of man. This chain link of action is Karma. There are three types of Karma - Sanchita Karma, Prarabdha Karma and Agami Karma. Sanchita Karma is our actions, experiences of sorrow and joy in the past - in this life time and the births before. Prarabdha Karma is the life inclusive of its pains and pleasures that we experience now. The way we experience the two - reacting to sorrowful experiences and overindulging in the pleasures, sets the pace for the future lifestyle called the Agami Karma.
While the past is over and cannot be changed, the present has to be tasted as it happens. If I have a headache now, due to my wrong eating habits and emotional patterns of thought, I have to experience that fully, even if it is by taking a paracetemol.
This sutra says that practice of Yoga - Tapas (austerity) Swadhyaya (study of self) and Ishwara Pranidhana (surrender to the supreme force) helps to avoid the sorrow that can happen in the future. It helps to avoid the head aches that I am likely to have in the future. It also means that the sufficient mental training to approach the pleasurable situations of the future with a state of balance is also given by Yoga. - Swahilya Shambhavi.