Larry Smith: Why you will fail to have a great career

TEDxUW 2011
Larry Smith: Why you will fail to have a great career (script)
Summary
The speaker Larry Smith seriously talks to us why we'll fail to have a great career.
You're probably told many times that you have to pursue your passion if you want a great career. However, you unconsciously decide not to do it somehow. You'll think it's too lazy or hard. You're afraid not to be able to find your passion if you look for it. You'll feel like you're an idiot.  You always make excuses not to look for your passion. There are many excuses there. It's just a matter of luck. You think that you're not a genius. People who pursue their passion are somewhat obsessive and weird. It's even worse to have just an  interest. Passion and interest are not the same. You must settle for "interesting," thus you can't find your passion. You think there are alternatives everywhere and finding your passion could mean sacrificing human relationships. Such person will be you. You didn't do it, so your kids also don't do it.  This is why you'll fail to have a great career.
In the last, what he wants to say regarding  "unless"  is that unless you could find a passion, you'll fail to have a great career, isn't it?
Words in this story
regarding / with respect to, concerning.
practicality /noun/  practically /adv/