Is everything predestined according to laws of karma?

Just as you cannot check your distress, so you cannot check your happiness. Whatever economic development we are destined to get, we shall get it. Whatever happiness or distress we are destined to get, we shall get it. We don’t try for distress, but it comes; it is forced upon us. Similarly, although you don’t try for it, the little happiness you are destined to obtain will also come. Therefore the scripture advises, “Instead of wasting your time bothering about so-called happiness and distress, better to engage your valuable time in understanding what is the goal of life, why there are so many problems, why you have to struggle for existence. This is your business.”

Source: A.C. Bhaktivedanta Swami Prabhupada (2014 edition), “The Quest for Enlightenment”, Page 84
A.C. Bhaktivedanta Swami Prabhupada (2014 edition), “The Science of Self-Realization”, Page 208