If you do not plan for things to go wrong then you will never know what to do when they go wrong. I think most of the people that know me almost hate me in a way because I have always said "I always have plan Z, and then some". There is no such thing is the "end of the line". That is just giving up. There are always other solutions. Some better than others but if you are willing. There are always other solutions. Don't be afraid to think beyond what you have been told.