Every day, you have 24 hours to allocate between work and non-work activities. Most of us allocate half of our hours to work - yes, 12 full hours. For example, you might spend eight hours (usually more) actually working, one hour at lunch, two hours commuting (one hour each way) and one hour getting organized in the morning. Add this all up, and you have allocated 12 hours - half of your daily hours - to work.
This schedule requires that your work and non-work activities are clearly separated into two distinct blocks of time. This is commonly referred to as “work-life balance,” and it is considered by many to be the optimal model for a happy and well-balanced life.