Ask HN: How do you log your time?

What methodologies and/or tools do you use to track your work and/or personal time?

Looking for long term ideas in the decades range. Is it sustainable to account for every hour of every day for the next 10 years? Is there an automated way to do this without fatigue and/or tool obsolescence?

I've kept a calendar and light journal throughout the last decade but don't feel satisfied with my 'soft' data. Perhaps I'm looking for a categorized log (to graph later). A Console.app for life would be ideal.