[kylerush]

> I started offering my experience as a database consultant to help teams them fix their performance problems.

How much of this did you do and for how long? I’d love to self publish a book, but from your post it sounds like a full time gig. Essentially take off a long time without pay, focus full-time on the book, then pray you make some good money.

[tpetry]

I've been helping devs for 2 years to work better with databases. Switched to full-time consulting this year.

The book took a very long time to create. Everything calculated together about 400 hours. So yes, I couldnt have done this in my free time. I just took the time this year as this year was planned as some kind of programming sabbatical - a do whatever I like thing. That it was such a great success and paid off all my time is just a bonus.