Journal. Daily. For 90 seconds. Do that for a week then bump it up to 2 minutes, repeat, bump to 3 minutes.
You can do anything for 90 seconds. And if you do, you’ll most likely keep going. The momentum is only there if you start, once you have that it gets easier. Hard to start when you are thinking of writing for an hour isn’t it? So just commit to 90 seconds.
Try it, I just did.
Now go fire it up.