The best book imho will be "Bhagvadgita as it is". Problem is it is a religious book and hence people are going to be biased about it. But if you are willing to

The best book imho will be "Bhagvadgita as it is". Problem is it is a religious book and hence people are going to be biased about it. But if you are willing to let go the thiest or athiest part (leave the commentaries seriously!), the very meaningful part of the book can be seen . This book is a conversation taking place on the war field and depicts the persons inability to take decision to go ahead because of various questions. I recommend going only through 2nd chapter and no further, it would be an overkill. In normal life the important part is to get determined to work and get it done .The theory postulated in the 2nd chapter seems to work in the practical life effectively when Krishna tells arjuna to go on with the war and he is reluctant to do so as he finds it immoral , full of vain and dangerous to social well being of everyone. He doubts himself . The weak in his heart and unrest sets in his mind, a common thing occurring in almost all of us . He seeks the answer to all this questions and this is what the reason of the conversation. IMO the book requires considerably unbiased mind and hence its a hard read. It is not supposed to be inspiring it is supposed to work . Considering this , you wont find any magical arrangement of words so it should be taken as theory and used in practical cases . Well if it works for you then great or you can just ignore it . But surely with proper reasons of course :)