Life has an effect and is a no-go

Good or bad, I've come this far by thinking about everything in terms of cost effectiveness.
Pay increases, for example. How much labor do you use to do that...? I often used my pay to attend weekday seminars, etc. As a result, various experiences and knowledge were gained, and as a result, income increased from there in side jobs and main jobs.
Investments, for example. At first, I was also watching the Quarterly Report, Mosate, and news sites. However, after thinking about and constructing a method to win without looking at such a thing, I also thought about cost ratio and stopped looking at anything.
Choose the one that is most cost effective. I also think that's what it should be. There are precious sacrifices, but the basic thing is that time should be spent to be effective. Life seems long, but it's short. You should use your time effectively.