Start with the easy ones first: Coke and Pepsi (adulterated sugar water). That stuff is bad for you from the get!
Absolutely. It is not hard at all... Go in semi-camping mode. Going to happen sooner or later anyhow with the way things are going. May as well do it on our own terms now and maybe make a real difference at the same time. We wait and the opportunity will be gone to make any difference, it will be too late and we will all be broke and camping 3rd world anyhow.