Do what you like to do. Life will pass you by if you relax only when the work is done. Take time to do something compelling in itself - paint, cook, work on a car. Do something in which you become so absorbed that you enjoy a sense of timelessness and tranquility. In a world of productivity, e-mail, faxes, and portable phones, we think more about our use of money than of time, which is irreplaceable.
Time is relative.
If our state of mind is that we must get a lot done, time flies. If we are sitting in traffic, time drags. You can control your attitude about time, and start experiencing life more fully.