Good thought. I didn’t consider the monetary cost of time when I wrote this. After thinking about it for a bit, I think that in a lot of cases it is still free, but has large costs in others. For example, I want to get stronger, so I want to consistently do pushups every day. Consistency in that case is almost free (minutes of time) but will have a huge impact.
At work, I am already there, using my time and gaining money, doing a little extra, and bringing energy don’t cost me anything (besides energy :)
However starting a new project, that will take, or replace time I spent somewhere else, definitely does have a financial impact.
And preparing definitely does take extra time and therefore money.
I guess that is why we should prioritize life. If I am not willing to prepare for something, maybe I shouldn’t do it at all.