EXCEPT FOR THE THREE RULES I HAVE ALREADY POSTED,
EVERYTHING CHANGES.
There is nothing that you can count on lasting forever. Everything is in constant motion. The team on which you were the slowest runner, changes and one day you will find yourself the fastest runner. Change is constant. Relationships, coaches, stability itself, is constantly changing. Rely on nothing because nothing is real. Everything in our lives was created; given a label that tells us what it is used for. They all change. Mankind was blessed by being given a life where there is no meaning. Because life is meaningless we CREATE meaning. You too, as a runner can create the kind of future you want to enjoy. You can run to create any future you can imagine just by working hard as a runner to achieve that end.