Best mini habit I ever picked up was simple:

Write.

I used to be the guy who doodled his thoughs randomly in notebooks but never wrote anything substantive unless he was under pressure. I could start a journal, but struggled to write regularly--I would keep the habit going for a few weeks. A month, maybe, and then lose the thread and drop it.

So I committed to the simple mini-habit of writing a sentence per day (with a pen), and then asking myself after I was done if I wanted to write more.

That was two and a half years ago. Changed my life completely. I burn through notebooks now, have written a dissertation and multiple academic journal articles (without needing deadline pressure), and best part - after about a year I started writing here. On Medium.

For most of the stuff I write (including the dissertation), I still write the first draft with a pen.

Pick a thing and do the humblest version of it every day. Easiest way to change your life.

J