I've no idea what loving your job must be like. I hate mine. Actually, that's not true. I hate the industry I work in (construction). I've been trying to get out of it for years but it keeps sucking me back in.
Similar-ish boat.
I never had anything that could be considered a career. All my jobs sucked for various reasons. Most of the jobs themselves sucked (restaurant dish pit, pizza restaurant cook/manager, construction, lawncare, etc). I never had the opportunity to be anything more despite absolutely busting my ass and giving 150% effort (couldn't afford school, didn't ever know the right people, had the worst luck forever, then becoming disabled).
One job was OK, HDMS measure tech. That's one of the few where the job itself didn't suck... it was the mf dumbass customers that sucked, and the worthless other techs I had to go out of my territory to cover when they screwed up or were generally lazy as hell. Well, even working my own territory, one other thing did suck... that every day was 200-300 miles of driving (rural area, I actually technically was over two markets, which had to be combined under one tech due to limited number of available customers and a minimum number needed in a day to be sent out).
I swore off customer service, which means I swore of 99.9% of jobs I could get. I was always a bit misanthropic, but dealing with people made me a nearly homicidal maniac.
Now instead of a disabled job hopper, I'm a disabled house husband. My life is chores, never ending chores. Still beats working with or for people though. I don't love it, but it doesn't make me want to commit murder either.