IIT Kanpur: The way to set priorities right

Following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Questioner (Q): I am frequently confused in situations where I have to prioritize one thing over the other. For example, work versus family, work versus rest, saving money versus spending money, etc. There never seems to be a clear answer. How to keep our priorities right in every situation? Please guide.