This is great. I don't expect that everyone spends 8h a day on projects (I definitely don't manage anywhere close to this), but even 1h per day is really solid and will compound over time. I've personally found the KPIs super useful in keeping me accountable because without them I have no way of judging my own progress (or lack of).

I've started doing some of what you mentioned above, but have a few new things to try as well!