[Carp]

I'm the exact same. Sometimes work scratches that itch and I can work a productive 8 hours. Other times it's boring repetitive work and I'll start slacking off.

[apercu]

Learn to finish projects, that's where the satisfaction is. Perhaps go into it without an overambitious design, hit a milestone. Step away. Come back later and augment.

[eyesofgod]

Same except the massively productive days are getting rarer and rarer.