This book markets itself on the premise that it is a down-to-earth interpretation of Buddhist principles geared towards a non-spiritual (or at least, not necessarily spiritual) Western audience. It kind of meets that description and it kind of doesn't.
During the first few chapters, there seem to be a few references to drinking, sex, problems with bosses and so on - I suppose to make the point that none of these are inconsistent with being Buddhist. Although there is a consistent focus on real life Western applications throughout, he tends to slip into loftiness more and more as the book goes on, The author has a nice, relaxed style, and a few of his comments did make me smile (I won't reproduce them here in case Amazon has a policy against inclusion of profanity in reviews - but paraphrasing one for example, "no spiritual master has ever said you will become enlightened by being unpleasant to yourself" - only it was funnier the way he said it :) ).
At the same time, the book does focus quite a lot (ie, most of the book) on the "four dignities of the Shambala", which are basically four animal totems with qualities one should aspire to learn from, and to apply in daily life. This focus, with exhortations to "be like the snow-leopard" seemed less relevant and contemporary to me. But, each to his own - some may find this kind of thing really resonates with them.
So, overall: readable, reasonably down-to-earth and fairly comprehensive (I guess in as much as a single book of this length can be). It's intelligent and well-written, and although it didn't exactly knock my socks off, I thought it was more deserving of 4 stars than 3.