[ali92hm]

Well based on how I spend my weekends where I'm fully recharged and energetic to get shit done, I assume it's the lack physical energy. Cause when I have the energy and mental power I do the things that I want to do.

One difference is that if I actually had a real deadline I would deliver no matter how tired/exhausted I am, but I'm not sure that's sustainable.

[wnolens]

I noticed at age 33ish my energy for all this stuff dropped off. Life just got more complex and my body became less resilient.

If you require a deadline to do something I'd wonder if you don't want to do it that badly. Which is okay, for things like work or even the last 20% of a hobby project. But reading.. I try to make that only for enjoyment.

I find more things I do which require will power or a deadline, the more I'm dipping into a finite resource which when expired leads to burnout.