Hello comrades and welcome to the fourth improvement megathread of January! 
One more week to go, there is still time to make some progress and finish the first month strong.
How was your week?
Do you have any plans for next week?
Good luck with your goals! 
A community which focusses on improving yourself. This can be in many different ways - from improving physical health or appearance, to improving mental health, creating better habits, overcoming addictions, etc.
While material circumstances beyond our control do govern much of our daily lives, people do have agency and choices to make, whether that is as "simple" as disciplining yourself to not doomscroll, to as complex as recreating yourself to have many different hobbies and habits.
This is not a place where all we do is talk about improving "productivity" (in a workplace context) and similar terms and harmful lifestyles like "grindset". Self-improvement here is intended to make you a generally better and happier person, as well as a better communist, and any other roles you may have in your life.
Rules and guidelines:
Hell yeah, congratulations on the sober streak!
I do journaling and it's the best habit I've ever developed. I highly recommend it.
I agree, reading physical books is a great idea to improve your attention span. I think mindfulness and meditation are also good. Mindfulness just means paying full attention to whatever you're doing. I like to listen to podcasts every day but I make sure to have some mindful activities where I'm just focusing on the thing I'm doing. Especially when I'm eating food or going for a walk. For meditation, I recommend installing any free meditation app (I use Insight Timer) and listening to guided meditations.