To be clear, I'm not puritanical about this. I still do takeout sometimes. And, I'm about to hop on some flights that will burn a ton of oil. (Ironically, one of those carbon-belching flights is to a dinner at Silo, which I'm looking forward to.)
Two of my biggest realizations have been:
1. There are many low-hanging changes we can make to reduce plastic, such as going to a farmers market, replacing a one-time use sandwich bag with a reusable one, or skipping delivery food (which often has more plastic packaging than actual food).
2. Low-plastic is often synonymous with quality. My cotton jeans, leather bag, and metal water bottle are all more expensive - but they are higher quality, have lasted for years, and can often be repaired. For example, my leather was an expensive $400, but I've had it for 8 years and counting - and just had it restored to look shiny and new. (Put another way: Plastic lacks wabi-sabi beauty).