Agreed, the Friday is essentially the day with the highest pay:effort ratio. It's a 20% salary for relatively little effort. And given a ratio of 80% spending

Agreed, the Friday is essentially the day with the highest pay:effort ratio. It's a 20% salary for relatively little effort. And given a ratio of 80% spending and 20% saving, that Friday can be the difference between living paycheck-to-paycheck and early retirement. Essentially if you make 5k a month, spend 4k and invest 1k at an 8% ROI from age 25, you'll have: 180k, 570k and 1400k at age 35, 45 and 55 respectively. If you live off of 4% of that, you'll have a passive income of $0.6k, $1.9k and $4.6k respectively at the same ages. In other words working that relaxed Friday from age 25 and investing the proceeds, will get you to the point that you passively earn the same as you did working Monday through Thursday by age 52 or so, without working again. And that's true for any income, at those same ratios. For many tech jobs the salaries are so high that you can feasibly get to early retirement in your 30s. There's a lot to be said about the power of a 3-day weekend though. It's not just that you get an extra day of weekend, you also lose a day of work. Expressed as a ratio, is when it clicked for me: You go from 5:2 to 4:3, or in other words: 2.5 days of work for every 1 day of leisure -> 1.3 days of work for every 1 day of leisure. It's approximately twice as good a ratio. And you really feel it, you feel rested and refreshed. I'm still doing 5d a week. For me the holy grail is to find a company that does 36h contracts with fulltime pay, where you have a 4 day week every other week. All the benefits of full pay, the occasional relaxed friday, but also two long weekends each month allowing trips, hobbies, projects, rest etc.