While training for the marathon, I was dedicated and on schedule, but I always imagined how great it would be when the race was over. During training, I was busy as I had to compress my schedule to fit with my running, I was tired from doing long, double-digit runs on the weekend, and I was always a little distracted as I prepared for the upcoming race. I figured once I stopped running I would have more time, be more awake, and be more focused on all the little things I ignore.
One year later...none of that happened. I sit today in my air-conditioned house very thankful I don't have to run a marathon this weekend...but I'm no less busy, I'm no more energized, and I'm not less distracted. In fact, it wouldn't be ridiculous to say that even with all the training and running going on, I was actually less busy last year, and more energetic throughout the beginning of the school year. It turns out that Mr. Spock from Star Trek VI was accurate when he said "nature abhors a vacuum". All the "free time" I figured I'd have has been filled with other activities, and the lack of exercise makes me just as tired at rest as I was post-running last year. The marathon fit into the schedule if I made it happen, and when I didn't, my schedule proceeded along anyway. There's no marathon-shaped hole in my life right now. In fact, I have no idea how I ever had time for it in the past.
Of course the answer is simple: you make time for the things you care about. If you want to run a marathon while working full time, you will. If you almost want to but think you're too busy...then you won't. The same really goes for anything else. If you want to write a book, or a blog, or take up a sport, or get another degree...you will. If you don't care about it as much as Netflix...then you won't. Your schedule is always full. The question is will you be the one filling it, or do you leave that up to chance? If that's the case...then you might as well run.