Science has proven time and time again that using positive thinking when working increases performance across the board (compared to working with a neutral or negative mindset). A positive attitude boost productivity by as much as 31%, as well as your creativity, willpower, energy, imagination and even mood.

Yet, positive thinking is one of the most misunderstood and unappreciated drivers of performance. Everyone looks for the latest app, or time management system, when a much happier (and...