[lxt]

As mentioned in the article, give up useless timekilling activities (TV, Facebook, etc).

The other big thing for me is cache warming. If you are doing non-mental activities such as showering or driving, use that time to plan what you're going to do next on your project. Pre-solve the problem: write the code, book, whatever, in your head. When you have free time - even if it's only fifteen minutes - dump the contents of your brain into your laptop. Don't spend that fifteen minutes thinking "where was I?" Do that in advance, and maximize your output in short stretches of time.

This approach is literally magical for me.