I read this article and while it's sad the author doesn't pursue passions anymore, I also can't help think that maybe they just aren't as hungry as they once were. I was diagnosed with cancer 4 years ago and it changed my perspective on life. I'm mid 30's now and more productive than ever. I also work full time and am a single father to two little kids. The way I describe it is that I am hungry. I didn't expect it to last this long but it's been years and I'm still regarded as a very motivated and determined person by others.