Making films can be absolutely fantastic but it can also be incredibly dull. You spend the whole day sitting by yourself in your trailer and then you get called to deliver one sentence - then you're told to come back and do it again at 5:30 the following morning.
It's a philosophy of life. A practice. If you do this something will change what will change is that you will change your life will change and if you can change you you can perhaps change the world.