" Your productivity level depends on your energy level and how effectively you can channel your energy toward activities that matter. Below are the different phases of the energy cycle: 1. Protect energy. Your energy is limited, and the best way to protect it is to increase the quality of your sleep, eat more healthily and exercise more regularly. When you fail to do so, your available energy decreases. 2. Channel energy. Energy that is not directed toward a specific purpose will dissipate and be of little value. Once that energy dissipates, you’ll never be able to get it back. Therefore, make sure the way you use your energy today helps you move closer to your ideal future life. To do so, you need a clear vision and a sound strategy. 3. Allocate energy. You don’t have enough energy to do everything at once. According to the 80/20 Principle, twenty percent of your activities will generate eighty percent of your results. Using this principle, make sure you focus on the tasks that absolutely matter. 4. Invest energy. Your energy must be invested otherwise it will be lost. Once you’ve identified your key tasks, put all your energy into them while eliminating any distractions. 5. Refill energy. Take breaks regularly so as to maintain good energy levels. 6. Restart the cycle. You can then restart the cycle all over again the following day. The point is, the more you can preserve energy and channel it toward the achievement of your most important goals, the more productive you’ll become. "
― Thibaut Meurisse , Master Your Time : A Practical Guide to Increase Your Productivity and Use Your Time Meaningfully (Mastery Series Book 8)