The 2 days you allocate to every week to keep yourself from burning out in 3 years and then spending 7 months doing nothing but following links on Reddit.
At this point I plan for burnout. It's just part of my productivity cycle. Small burnouts happen 1-2 times a year and involve about a week of doing nothing; large burnouts happen every 2-4 years and require a couple months. This happens with or without weekends.
