"The process on how to use your list of lost deals to win the next one GUARANTEED"
Have you lost a deal recently? Of course you have. We all have. The point is to understand what was lost and why. This is about learning, as there's always something to learn.
There are always deals which do not close and there are always reasons why this took place. Some of these reasons we cannot influence, such as the wrong timing, when the person does not have a problem worth solving, or you have not been talking to the right decision-makers.
However, there are factors you can influence when it comes to closing, such as whether your offer is good enough and whether your offer needs to change according to the context.
For every lost deal, analyse it. Celebrate those deals you lose and view them as an opportunity to improve your offer.