“The way to better oneself is not to ponder over the past but to look ahead.
Even Duḥkha is a great teacher.
In fact it is the first and important step in the ladder of Viveka or clarity.
The greatness of Patañjali is to look at Duḥkha as the stepping stone to success.”
– T Krishnamacharya commentary on Yoga Sūtra Chapter Two verse 16