I found my marketing company through my bank. The owner, female, is part of a women's business network. It's also how I got in touch with my accountant.
To become a business vs someone self employed you have to remove yourself from the field to some degree. You get to the point where you're doing too much and you're (me) the one holding back the company. Let it go. Let your guys do what you have taught them and also what you pay them to do. This doesn't mean you never dig a hole again or run a machine etc but you've got to have some time to run the business.