I think OP means that once their investment returns starts exceeding their wage income, their motivation for continuing to work drops.

Which, I kinda get. If you don't really like what you're doing, it's harder to stay motivated at continuing to work when your bag of money makes more money than you do.

It sounds like OP is already planning on some amount of return to work, which may be necessary because that exact point (investment returns > wage income) isn't necessarily a safe point to retire. But it might be, depending on how much you spend, and what your not-employer-funded healthcare costs are.