In my area the Small business Development Center has been invaluable! Google it up for your area. THIS IS WHERE YOU NEED TO START!
I think this is sound advice and a great place to start. I am in the very early planning stages of RE-starting a business that I started part time several years ago. I think a lot of us are in the same position and have a current job and responsibility to provide for our families. When I started my business part time years ago, it was just my wife and I and a small house. We both worked and I started the business part-time on the side. My business plan only consisted of figuring out how to buy the minimum equipment I would need to do have a "full service" tree business. (Removals,pruning, stump grind, clean-up). I got some insurance, some business cards, some shirts, signs and a small ad in a local rag. I got some jobs big and small and from those jobs I got more and more etc etc. My business didn't so much fail as it just faded away because it had no plan or direction. I didn't know what to do with the money that I made except pay my bills (not much) and then my wife used most of it to pay for other stuff. I had more work than I could do part-time and had to turn a bunch of work down. We had a daughter and suddenly my focus was split even more.
My business was on the ground floor in its development, but with no foundation under it and no plans for the second floor. So I never got off the ground floor.
The basics were there. I had a product to sell, the equipment to do it (pretty much), I had customers new and repeat, I had cash flow, but I had no plan and no direction. I guess I thought as long as I could get jobs and get paid the rest would take care of itself.
As difficult as it is for a lot of us to do, I think you need not only to have a sound business plan, but that plan needs to include you jumping in with both feet. You can't start a successful tree business just by dipping your toe in the water and checking it out. There is a lot of overhead in this business to do it right. You can't just have insurance when you need it on the weekend. You can't just pay for your equipment part time. That stuff is always sitting there costing you money. It needs to be working everyday and making you money.
I was doomed before I started and I realize that now. I thought I was hot $#it in the beginning, gettin jobs and collecting checks, but there is so much more.
I love this work, I still do "side jobs" for friends and family for the fun of it and to keep my skills (and nerve) and I have waited for the right time to do it the right way.
I will succeed this time and achieve my goals and so can you if you have a plan. I now know my strengths and weaknesses. I am good at the work, good with the customers, but I need help with the financials and I will hire that out. We can't be experts at everything.
Good luck and I hope you guys will achieve your goals!