The time spent commuting, standing in-line, sitting in meetings and so on may be felt like wasted time but they are activities which are, pretty much, difficult to avoid.
And let me tell you I'd go back to being lazy in a heartbeat. I was much less successful and poorer, but happier, calmer, and more interesting.
I highly recommend procrastinating.
Then my wakeup call was getting fired from my internship, realizing I had a shitty GPA, no idea how to code, and no guarantee I would graduate, or that I wouldn't end up homeless after I did.
So every time I needed to do something and had that feeling of procrastination I'd reach down inside, imagine how much my life would be a failure if I didn't accomplish these tasks and then push. And it worked. I started getting a lot more done, my grades improved dramatically, and at my next internship I was a star.
Then it was 5 years later, I'd done well at every job I had, but I was 25 pounds heavier, had stomach issues, my memory was terrible, I hadn't thought about anything but work in years, and my cortisol levels were abnormally high. I decided that I needed to slow down and I can't.
Success is addicting, and now interwoven with my identity. And I've found that it's very hard to slow down. And when I do I start to get depressed when I don't do as well on projects as I'm accustomed to so I usually end up revving back up again promising myself I'll slow down for the next one.
Not to say procrastinating is always great, but not procrastinating isn't just a bucket of pros without any cons.
That's great if you are actually able to enjoy the time spent procrastinating. But when your procrastinating ends up with me, high strung, hard to relax, hard to get work done procrastinator, then it's not that great.