Go back to basics & start again. Get rid of everything surplus to you & 1 other man. Get rid of all the crap work & keep the cream. For the assets that you can sell then pay any debts off with it.
Had a mate in another trade in similar circumstances, he ran before walking, had ideas beyond his capability & budget, had multiple vans, staff etc & his final years turnover was 270,000!!!! YET, in five years he never made a "profit" of more than what he did as a sole trader with virtually no overheads!
In the end he got taken for 40k & finished him off in that way of business.
He went back to basics 3 years ago, wasn't so blase & silly this time & is now doing VERY well with two permanent staff & subbies when needed, in-fact, he doesn't do much on the job work these days. He is now much better off & happier.