Seven years ago I was a Staff Sergeant in the army, in a Warrant Officer's post (therefore my next promotion to a 'Sir' was fairly guaranteed). Had I remained I would be just over a year from my pension (about a £45K tax free lump sum and a monthly payment of about £600 per month for doing nothing; payable from the age of 40 years old (after 22 years service)).
But after an extremely turbulent previous five years, never being at home and despatched off to places I didn't want to go to, like Bosnia, Kosovo, Scotland (I covered Paisley during the fire-strikes), etc I jacked it all in. During my 'round robbin' of termination of service interviews I told them all, including the Commanding Officer that I was going to be a window cleaner.
They couldn't believe it; how could someone with a good career/income/pension leave it all to become a lowly window cleaner? Honest; they thought I was taking the p out of them. I may as well have said I'm going to be a circus entertainer, eat fire, juggle, and ride a uni-cycle.
And for the first few years as a window cleaner I was totally skint; I even flogged my medals on e-bay to pay for some unforseen car repairs (honest); and the £1.5K I got for them amazed me (there's some sad people out there).
But now it's the best thing I've ever done; become a window cleaner; and I don't justify it to anyone. It's what I am and what I do.