This is being too hard on oneself. Getting better sleep, being more active, and eating better are problems of modernity. When it got dark outside, our ancestors got sleepy. There was no need to exert willpower. Chastising oneself for not having enough willpower to flourish in an environment we were not designed for is not productive.
Instead, let us change our environments to better suit the primates we still are.
This. We have created a society where healthy eating, quality sleep and sufficient exercise are all considered luxuries rather than the default.
The cheapest food options are the unhealthiest. Hours of overtime and long commutes prevent sufficient sleep. And exercise is considered a leisure activity.
I agree, but I guess I don't have any hope that we will fix any of these problems. We continue to make all of this worse. Many of our jobs wouldn't exist if we weren't working on making these problems worse.
Instead, let us change our environments to better suit the primates we still are.