Work/Life Balance … Does it actually exist?

When I first started my business I vastly OVER-estimated my 'free' time & vastly UNDER-estimated the time I needed to complete basic administrative & teaching tasks (let alone projects). My twins were going into preschool 3 mornings a week & I thought, "Great! I have all this free time & can take on more students. Easy!" The reality was that I didn't accurately budget my time. So as you go through registration for your studio, how can you find a semblance of balance?