Any navigation aid however flawed is based on the premise that you are at the center pointing out (heads-up or north-up.) Magnetic variation, wind, INS drift, GPS figure of merit all produce positional problems in the system. But you are always at the center, right were your seat is. That's your reality (truth.) Attitude, altitude, terrain, weather and airspeed are all factors as well . Aviate, communicate and navigate (all verbs) is the mantra for dealing with a in-flight emergency. Nose down attitude heading towards a cliff is time for a heading and attitude correction. (PK of ground is 1.0)
Always know where you are and stay ahead of the aircraft. (Where am I and how are they trying to screw with me?) The heading is subjective the amount of change is not. 180 out is plus 2 minus 2. 1 plus 2 = 3 8 minus 2 is 6 new heading is 360. Works everytime. No matter where you go there you are.
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.
