Rarely,
The very best of luck mate and don't lose sight of the fact that you have a huge amout of transferrable skills to make your mark in the world outside. I left in 1996 after nearly 28 years after a, mostly, enjoyable career marred only by working for a couple of total tw@ts.
We have now been in the same village for 15 years and, for the first time in our lives, Mrs 1.3V and I have been able to put down roots (we are both Service brats).
Guard your fond memories of the cameradie, but look forward with confidence - you won't fail!