Preparing is more about mindset than equipment, IMO. My goals are probably different than yours, and I don't have the anxiety that you've mentioned on occasion. I plan to keep fed and watered for 5-7 days. I don't need radio, power, warm water, bubble baths, sun screen, 3 changes of clothes..... etc (yes, deliberately over-the-top examples).

And there's a point when prepping is a euphemism for "hoarding."

And at the end of the day, you just have to survive long enough to leave the impact zone. A can of gas and a $50 bill is likely enough for 80% of people. Life goes on outside of a disaster.