Clearly, this post is intended to be inspirational, and help you to find time to write. It does include common sense ideas, & tells you about famous people for whom each idea worked.
The problem is that most of the ideas are hard to maintain. I find getting up earlier only works in the short term!
If you really need to milk some more productive time out of your day, there is a useful chapter in No plot, no problem, by Chris Baty.
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