Human beings become who they are not necessarily because they are endowed with tremendous knowledge, capability, or talent. It is simply because they are devoted to what they are doing.
Guru Purnima celebrates the human ability to rise beyond physical nature, and the Greatness of Adiyogi, who made this possible. Most auspicious to receive grace.
In the marketplace, it is considered smart to give less and take more. In a genuine relationship, you give whatever you can without caring what you get back.