Every manager or business owner is faced daily with the need to make decisions that can result in the growth or death of the company. How not to make a mistake, getting lost in the wilds of accounting? What to be guided by if the decision needs to be made "here and now"? Where can I find a reliable tool for operational management decisions? The author of the book gives a simple answer to these complex questions, based on the theory of constraints and his own many years of experience in consulting.