If you have only passion, you get burnt out and frustrated. People who have too much passion, they do things and get burnt out. Do you know why? It is because they are holding onto it. They put their heart and soul into it. They put so much strain, and still they don’t get anything in their hands. That is a sorry state of affairs.
This can change with dispassion, and that is why dispassion will make a big difference.
So, passion when you work, dispassion when you turn inward, and compassion all the time, is the key.

Sri Sri Ravi Shankar          

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