After Hurricane Floyd hit NC in 1999, Home Depot was offering no interest financing. I made an offer to my church to maintain the grounds since we were having such a hard time getting members to consistently do it. They agreed at $400/month. It should have been priced around twice that but I didn't know or care.
I bought a Scott's 25/54 garden tractor, Ryobi split-shaft trimmer-edger, and Echo BP blower at The Home Depot. I pulled it with a Ford Ranger and single axle 12' trailer. This was all part-time outside of my job with Pepsi.
Now I'm a full-time firefighter but still working solo (my 14 year old son helps some). I have two F-250s, two trailers, 3 Gravely ztr's, a New Holland tractor, and my revenues have been six-figure the past two years.
Do what you love, love what you do.