This is Epictetus re-packaged for modern readers that may not be used to reading philosophy or who simply want a quick introduction to Stoic philosophy.

Lebell's re-packaging of Epictetus is a quick read, and does an excellent job of distilling the main ideas of stoicism, such as not worrying about what one cannot change, the importance of maintaining inner tranquility, and so on.

I only give it 4 stars rather than 5 because it is a bit thin in some areas. For example, although Epictetus reminds us that faith is an important component of happiness, it is left as an assertion rather than a full fledged argument. You'll have to pursue other works such as Seneca's Letters and Marcus Aurelius' Meditations (or the original Epictetus) to see the basic Stoic arguments more fully fleshed out.

However, this is a minor quibble. I think that the book does what it sets out to do exceptionally well, and I would recommend it to anyone, even people that are very familiar with stoicism.