One of the most powerful concepts I’ve ever learnt is Buddhism’s Philosophy of Impermanence. This single concept has helped me reduce my worries immensely at work. All things that used to worry me at work, doesn’t matter anymore whenever I think of this concept. I’ve also seen highly successful people mention this single concept of impermanence.
Below is a great video that describes this. Warning, truly understanding this concept can change your life as it did with mine. Enjoy.