HI Rainwater,
When I left school I was looking for a job that paid well, had low hassle and was flexible on hours allowing me time for other pursuits. My Dad ran a successful window cleaning business and had done so for a few years, (he used to be in the city in banking but gave it up when the ulcers appeared), I joined as a junior member of the team and despite several forays into other business's I always carried on with window cleaning.
Now many years down the line I wouldn't want to do anything else, apart from sipping a long drink beside a pool in Menorca!!