Write it down, over n over. I find three times a day, for a week, usually helps it stick.
Also, I find the best way to make stuff stuck is to read through it first thing in the morning (ie wake up early, about 5 or 6, allow an hour - or two if poss -, and read it through, over n over). This seems to mean it sticks, before the rest of the day intrudes.
And spend a bit of quiet time, just sitting and visualising - ok, i've taken off, what can I expect next in the worst case scenario (IE engine failure after take off, radio calls, divert to alternates) etc.