I think this is possibly partially burnout, it could also be part of "growing up", or perhaps you shifted priorities. I used to work 50-60 or even 80 hours a week, people praised me that I would respond within minutes on a Sunday evening - and I would be proud of it, too.<p>But that was 10 years ago. Now I don't have work email on my phone, I work freelance, so I get to decide on what I want to do next; and work in general just doesn't take up that high a priority anymore (being a freelance contractor has helped me develop this trait of "I'm here to do work for your company, and you pay me").<p>I enjoy working on side projects and learning new stuff, and one side project I started 8 years ago is still profitable to this day, but I wouldn't have started it anymore today, the motivation and naivite just don't exist anymore, plus since I have a family to support, it would be too risky to start that big of a side project.<p>Maybe it's time to just take a step back and assess what your long term goals are and in general what you want to achieve in life.<p>And it also reminded me of this:
<a href="http://www.paulgraham.com/kids.html" rel="nofollow">http://www.paulgraham.com/kids.html</a><p>"I hate to say this, because being ambitious has always been a part of my identity, but having kids may make one less ambitious. It hurts to see that sentence written down. I squirm to avoid it. But if there weren't something real there, why would I squirm? The fact is, once you have kids, you're probably going to care more about them than you do about yourself. And attention is a zero-sum game. Only one idea at a time can be the top idea in your mind. Once you have kids, it will often be your kids, and that means it will less often be some project you're working on."