Don't let your children read this

Up until the age of 5 or so your time is pretty much your own. If you were more conscious of the fact you would look back on this period fondly. From then on until the early twenties you are likely to be spending most of your time occupied with you education. This will require that most of the energetic hours of the day are spent in learning establishments with, perhaps, 20% of that time being constructive. From then on until the age of about 65 to 70 you will spend most of the prime periods of your day engaged in work. You may or may not enjoy this work but during these periods it is unlikely that you will develop potential in any other areas of your life in any significant way. You will likely not notice this fact and generally be content with a hobby or two and some comfort time in front of the TV. From 65ish onwards you will wonder where all the time went, wish you had developed some other kinds of interests to help you pass your time and then you will die.