Mandy suggested I read The Diamond Cutter (The Buddha on strategies for managing your business and your life). Whilst I found it heavy going initially, there were parts that I empathised with.
One quote:
"Success, personal or business, is a result - and all results have causes. When you repeat the same causes, you get the same results. If you're doing business in a way that doesn't always produce the same results, then you haven't found the causes. If you don't know what causes a result and you keep trying something that you know doesn't always cause the result you want, then you're just being lazy, and don't be surprised when you don't succeed."
There seems to be a lot of these types of books around now from a variety of religious viewpoints (eg The Purpose-Driven Life (Christian) and The Committed Life (Jewish).
What they have in common is our need to transform the everyday material life into something spiritual. For example, this can be done through honesty and ethical conduct in everyday business life.