Drawing Takes a lot of Chakra (real concept, not just Naruto) out of a guy. I've used a LOT of Chakra...Chi.

Drawing and writing fiction and publishing books and comics and other forms of creative labor takes a lot of Chi out of a guy.

I did a TON of creative work during the last 11 years.

I know exactly why my creative performance is "suffering".

It's because I'm tired, fatigued, and exhausted from overwork, and doing a thankless job.

I used up my energy, and never took time to revitalize and rehabilitate myself. I'll continue to deal with the fatigue brought on by the last 11 years.

Many artists fail to realize real creative genius has a limit. No one can draw every day for an entire lifetime. There will be breaks.

I might have a high power level compared to certain others, but even if that's true, which it might be......

I still know one thing remains constant.

Superheroes and Manga God Heroes AREN'T REAL. This goes for AMERICA AND JAPAN, 2 of the hardest working countries, if not THE HARDEST WORKING COUNTRIES.

There's no such thing as an unlimited energy and power supply, even for people like Dave Sim  or Katsuhiro Otomo. Even the most powerful of us need rest and need to crash (aka sleep). We'll die WITHOUT sleep, so we really have no choice but to rest every once in a while.

Energy is not limitless unless we're talking about the energies and chi of the cosmos.

But HUMAN energy and Chi. DEFINITELY NOT LIMITLESS.

The most productive writers and artists like myself have LIMITS to their energy and power.

The trick is making work that merely APPEARS LIMITLESS and INFINITE in real life.

Not that it actually "really is" it isn't.

ALL ARTISTS will recharge their batteries and energy levels at some point.

The usual: R&R. Rest and Relaxation. I find meditation helps.

Speaking of energy. In terms of my own personal preference, (in terms of recent creative activity), I tend to only pick up paper, pencils, pens and sketch in my sketchbook when my energy levels are at their highest. This tends to be in beginning of a weekday afternoon, when most people are busy having LIVES with school and work. I don't have such things to worry about other than my drawing work, so I get the most creative work done when I notice not much is going on. Quiet times of silence and sunshine is what I feed off of in terms of when I sketch, write, and draw. I hardly EVER draw in the middle of the night. Not a vampire.