What about less days and less hours ? That's just me (or is it?), but I'm always better and more enthusiastic at anything I do when that thing doesn't take up 80% of my awake time. I always solve problems when going back to them after a pause -always !
This is not the way, it's better to work less hours per day than working more hours and fewer days. Productivity peaks at 6 hours, after that you're either less focused or just doing unproductive things. It's also gonna burn out harder.
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