[tweriaroats]

I understand it in a few different ways. Impermanence is the obvious one that everyone talks about which is basically as Johnny Panic just explained. But on top of that you no longer have any of the same matter you had in your body even just seven years ago.

I also think that many people think what is them is whatever it is in them that thinks. They think they are the thinker but really thoughts just come and go there isn't exactly a thinker.

I also look at it as though you are simply the sum of your parts your body, your consciousness, etc. So you are not exactly a singular being your 75 trillion cells. And all these parts are not personal they aren't yours. Everything you are was here before you were. All the matter in your body comes from food you have eaten. And all your thoughts are created by your outside environment as well along with your brain chemistry formed by genetics. But your genetics come from your parents. So your existence is completely dependent upon the existence of everything else.

As far as applying it to everyday life I guess I do when I feel frustrated and start thinking "I shouldn't have to do this" or other self centered thoughts. I remind my self that there isn't exactly a "me" to feeling or think that way and it helps me keep my cool.