I came across this a few years ago and have adopted it un-altered as every time I read through it I find it applies to something that is going on at the time.
Never desert a comrade in need, in danger or in trouble.
Never withdraw allegiance once granted.
Never desert a group to which you owe your support.
Never disparage yourself or minimise your strength or power.
Never need praise, approval or sympathy.
Never compromise with your own reality.
Never permit your affinity to be alloyed.
Do not give or receive communication unless you yourself desire it.
Your self-determinism and your honour are more important than your immediate life.
Your integrity to yourself is more important than your body.
Never regret yesterday. Life is in your today and you make your tomorrow.
Never fear to hurt another in just cause.
Don’t desire to be liked or admired.
Be your own advisor, keep your own counsel and select your own decisions.
Be true to your own goals.