This is the best advice I have read about creative work:

Be boring. (It's the only way to get work done.)
It's from Steal Like An Artist by Austin Kleon, which is an excellent book for anyone interested in creative work. It's full of practical advice.

Most people have to practice their art for a while before they can make a living off of it, so in the mean time, they need a regular job. Austin says, get a job you can tolerate, pay your bills, and build a routine. When you have regular hours that you work, you know what time you have left, and you can carve out time to write stories, compose music, take photos, draw…whatever it is that you do.

Better yet, Austin points out that if your job doesn’t take a lot of creative energy, you’ll be happy to pour that energy into your hobbies. You take care of yourself, and you keep your mind in the right place to produce art.

This is more useful than the advice I’ve seen that focuses on craft. Other books I’ve read on writing tell me to set a daily word count goal and find a distraction-free space—which is fine, but they don’t connect creative work to the rest of your life.

Steal Like An Artist is the first book I’ve read that blends creative work with the average, day-to-day things. It’s the first time I’ve said, “Yeah, that’s something I can try today.”