I heard this talk by Economist Larry Smith on yesterday's Sunday Edition and found it both entertaining and revelatory.
In a nutshell, his argument is that the only things holding us back from realizing our full potential as human beings are our own excuses. It is much easier to rationalize not following our passions than it is to actually risk the financial sacrifice, isolation and rejection that often come with pursuing our "destinies".
It's a reminder that once we've found something to be passionate about, we must never limit ourselves in our pursuit of that passion; let the outside world do that for us if it will.
