Alternating periods of activity and rest is necessary to survive, let alone thrive. Capacity, interest, and mental endurance all wax and wane. Plan accordingly.
Tim FerrissThe start of the day is often the best time to get things done. This is somewhat related to willpower.
Tim FerrissAs far as income goes, there are three currencies in the world; most people ignore two. The three currencies are time, income and mobility, in descending order of importance. Most people focus exclusively on income.
Tim Ferriss