Support a local CSA (community supported agriculture) if you can and source as much food as possible from local farmers practicing regenerative agriculture! Our hyper-industrialized food system is at the heart of so many environmental, animal welfare and health-related problems. Eat less meat, especially beef and lamb, which contribute the most emissions per kilo (Our World in Data: https://ourworldindata.org/environmental-impacts-of-food )

There are a few products that come from warmer or tropical regions that I would really have a hard time doing without - coffee, citrus fruits (oranges, lemons) and sesame products/sesame oil, which is used a lot in Asian and Mediterranean foods. I don't think we'll lose access to these items any time soon, but they may become much more expensive as climate change continues to bite and cheap energy winds down.

I find that the biggest hold up i have is utilizing public water systems, whether that be from a water fountain or tap i find it alittle unsettling to consume, being unsure of the water quality of the given area. To combat this, i consistently drink spring water from home that we have delivered in glass jugs, ensuring a reduction to my microplastic intake, as well as providing traceable sources of purified and properly treated water. I like consistency, ice cold water and i think there are too many variables when drinking from a random public faucet, beyond contents, but also temperature. Now before i got my Owala i struggled with having a consistent bottle in my life that i would fill daily, and i blame this on the oral fixation that comes with traditional water bottles on the market; for example, the gatorade bottles that have the spout-like top to suck from is a limiting factor for me. additionally I'll mention any reusable cup that has a straw, i find this to be very unsanitary and i dont like the physical act of sipping through a small straw or pouring things into my mouth from a bottle with a large top. the owala allows me to have a liter of ice cold purified water from the time that i leave my house to when i get home 10 hours later.