I was mowing part time when they closed the local telephone engineering office. That was in 1983 when I started mowing full time.
I tried crews and handled a lot of other people's money. I'm solo now and making more real profit.
I figure getting out of that office saved my life. I've lost 50# and I'm healthier & happier.
I've sifted thru the clients over the years, keeping the best. I've kept one with a 26 acre lawn since I was part time.
I work more or less like a groundskeeper now. If something needs done I do it and bill them.
There's less stress than engineering for the phone company. Though my daughter told me it took her three years to tell her friends at school that her dad is now "the lawnmower man."