I have done quite a few jobs. Oilfield in my late teens-early 20s, bartender, security manager, police officer (SWAT counter-sniper) for 15 yrs, US Navy (tours in the Mideast where my radio call sign was "Magnum" cause of my never-in-regs mustache and wavy hair), and now UN police advisor in Haiti. There is a saying that goes something like... Why leave a good looking corpse when you die. Wouldn't it be better to be headed towards the grave going 90 mph with your hair on fire, sliding into the hole sideways yelling, "WHAT A RIDE!" Well, so far my hair is smoldering... I'm sure I found my calling but wasn't listening. 
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...and that, as they say, is the hell of it.