It is when u live a life of simplicity & wellness.
We're a meat, microwave, and a soda free home, which in turn saves us money and keeps us healthy.
Growing your own food has its challenges and at times could be downright discouraging. Other times you'll find yourself with an over abundance of a particular fruit or vegetable. You're creativeness kicks in and you'll begin to think of ways on how to prepare it, preserve it, use it as bartering, or selling it.
There have been plenty of times that we have supplemented our grocery income with simply selling a few plants :) In turn making us somewhat sustainable :)