Problems or successes, they all are the results of our own actions. Karma. The philosophy of action is that no one else is the giver of peace or happiness. One's own karma, one's own actions are responsible to come to bring either happiness or success or whatever.
Maharishi Mahesh Yogi on the Bhagavad-Gita, A New Translation and Commentary, Chapters 1-6, New Special Expanded Edition by Maharishi Mahesh Yogi (2016-05-03)