What to do with my free time?

Like most overly dedicated grad students I worked all holidays except for Christmas and Thanksgiving. I switched off when I left work for the most part but occasionally I still had to pull out my computer to run a little code or do some emails or writing outside of work.  This was on top of very long work hours at the lab. This happened for a little over 4 years. And I definitely wouldn't have been as productive otherwise. Our lab was definitely split into the 'overworkers' (OWs) and 'barelyworkers' (BWs) categories. The OWs graduated on time or early with a job offer in-hand. The BWs hit the 7 year mark and are gently pushed out with no more than a postdoc in-hand from the lab they're graduating from. So I don't regret having spent that much time working. Especially since I love doing what I do. 

Since leaving academia, I didn't want to spend all my time at the lab anymore. So I don't work outside of work; even for emails.  The only drawback is that I try and get all my work done at work (even if it takes 16 hours/day).  So now I have weekends and holidays free, plus my average schedule isn't as bad as when in grad school.  I even take vacations now. Gasp! And I find myself looking for stuff to do. I have plenty of hobbies, but I got used to doing them at such weird times and intervals that even after years of being outside of academia I find myself looking for stuff to do. I go exploring in my city a lot, started writing a blog, dedicate more time to family and friends, play music, etc, but I still sometimes just find myself sitting around thinking of what to do. I've been able to finish more books, but I can only read so much before getting tired.

I always thought I could retire and never be hurting to find things to do because I could never find time for hobbies. But here I am trying to fill out my free time....albeit, this happens in the minority of my time.  I don't want to go back to my OW life, because gray hairs do not match my outfits.  This is, of course, only during the lulls. When things are blazing at work I find myself longing for hobby-time, when there's a lull I seek things to do. During these times I've picked up video gaming, Netflix binges, hanging out outdoors just thinking, napping, and reading books and scientific articles. I wish there was a safe medium, where I had just the right amount of time for hobbies, while never feeling like I have to try to find things to do.

This has become less of an issue the more I'm out of grad school, but I'm certain this is because when I first started working I had a lot more free time; as I get more responsibility I have less and less free time. But I can't seem to remember any transitions when I had the perfect amount of free time. I'm guessing it's around 50 hours/week working and maybe 20 hours/week for standard tasks (showering, cooking, cleaning, errands, etc).  But I don't think that's correct. Maybe that's the beauty of working for yourself: you know exactly how much free time you need and how successful you want your business to be.  As long as in not an OW or a BW, I'll be happy. Who says I can't be left or right leaning...just hanging out in the middle. 

Maybe I'll pick up a drug habit. That's what the media tells me teens do when they're bored, right?