Never say never is something I have learnt the hard way as I have realised in what ever situation you are facing you can not predict the future, good or bad, and something just around the corner can be life changing in ways that could never be expected.
This means having an approach to life that is firstly focused on how things should be but is flexible enough to adapt to new situations as they arise. This means as well as having a good first plan A, it important to know what to do when that is not possible by having a good Plan B, C, D, E and so on. It is about understanding if anything can happen at any time, there it is almost always going to be a solution to any problem in one way or another.