No, not cardiopulmonary resuscitation. Sure, you might miss the gym one day. We all have bad days. You are fine if you immediately get back on schedule. The seduction is once you've missed one time, it's easier to miss two, three or more times, and then forget that you have forgotten.
Consistency is the key.
Stubborn is denying the reality in front of you. A commitment to keep growing, to make things better and better. Not because it is stronger, but through the power of persistence. The problem is there really is no such thing as coasting. You are either moving forward or you are moving backward.