Focus on the client's needs
This is one of lean management’s core concepts. Based on the idea, start thinking with the end in mind. Now, I use this principle almost daily, but the first time I used it was at university when working with a friend on a project. We wanted to be very efficient. Therefore, we thought about how the presentation should look and only worked omly on these relevant topics. That was the first time we did not have an all-nighter before the final presentation.