First off let me say that I'm fifty-three and came up in the trade the hard way, I started working at the age of ten with my uncle in a Ammonia plant.
Never left the trade, stuck with it thru the good and bad, seventy-three was the worst times I remember during the oil embargo.
During that time we rarely worked thirty hour week's and did not get paided for waiting in line for gas in the service truck's, thats when the light flashed in my head.
This July will be thirty year's that I have been in business in cental Florida, its a small family owned.
Mostly niche jobs, lots lab work, industrial stuff and occasional a/c job for good a customer.
I rarely charge by the hour for my service work, mostly just do the job and send a bill, can't remember the last time someone complained.
Yesterday I was working on a optical process chiller in a lab changing a heat exchanger, anyway a large a/c company was also there Installing a new a/c unit in the lab.
I have never heard so many disgruntled people in all my life, they all worked against one another cussing and yelling, I finished my job and left.
I have one more thing to say, you can make a very handsome living in this trade and you need to enjoy it to be successful.