Its certainly a brave decision to live off-grid at any time of your life.
However, if you plan well, you should be able to weather most situations. Just make sure you have a line to the outside world (satellite phone, and perhaps mobile or internet) and your nearest neighbours!
Yes, we at least have a marginal mobile signal, and the nearest neighbors are within easy walking distance. Thankfully, they are also much younger than we are and are quite resourceful.