I've always been a busy person. My parents can well attest to the fact that as a child I was always launching into great big fun projects (from my perspective) that were guaranteed to eat up all and any free time for the foreseeable future (from my parent's perspective). As a kid I competed in sports every season of the year; went to schools (of course) and spent more time on homework then any other kid in my class; acted in plays; entered math competitions and science fairs; volunteered for different charities over the years; learned to sew, cross stitch and crochet; concocted hair brained schemes with my siblings (house wide elections, our own science museum, etc.); and devoured book by the ton. This turmoil of activity has taught me two things.
The first is to manage things wisely. As a kid my mom was the one who threw on the brakes when she figured I was going to take on too much for me to handle. As an adult I think I've learned to manage my own time fairly well. None of what you're doing is fun when you're to tiered to enjoy it. But I've also learned to prioritize. There does need to be time for the fun stuff that you do just for the heck of it along with all the purposeful activity that comes with being an adult.
The second is that anyone who is bored isn't looking hard enough. That also goes for anyone who has to spend gobs of money trying to entertain themselves. There is so much out there that no one should be sitting idle. Learn something! With the internet you can get info on pretty much any subject for free. Make something! The next time you need something make it yourself. So what if you've never baked your own bread or built a table? There was a time when you had never tied your own shoes, you've managed that eventually. Go outside and look at stuff. There is an amazing, beautiful, absolutely insane world out there.
Sure when you get busy and start doing stuff besides watching TV there are people who will tell you that it's a bad idea. Just tell them Elizabeth said it was ok and refer them here.