I'm in a similar position only a bit younger and richer, I've found restricting exposure to information helps a lot. Meditation is basically spending some time not worrying about anything, it's not particularly helpful if you do it for a bit just to browse social media later. What I've done is remove lightbulbs from living spaces, delete social media and timelock any timesink (my browser allows 20 minutes of HN per day), sold my TVs, use candlelights and focus REALLY hard on not even thinking about things you can't change.
Parking time to practice not-thinking has a cumulative effect in my experience, but it accumulates quickly I.e. days of practice. I’m not as disciplined as some, and mostly my diligence comes in waves where I re-establish a sitting routine every few months after life distracts me.
