Rhiannon, I can identify with your experience. We had a company and my DH's partner withdrew all the funds from the company account and put it into another failing company of his own.
We lost about £100K , three cars, offices, lifestyle, etc overnight. If it hadn't been for my parents who paid our mortgage and school fees for six months we would have lost the house. We were in negative equity for 4 years, so we sat tight in a tiny house with two rapidly growing children.
DH took on all the liabilities of the company and kept it going, we took on office again locally, but found it too costly.
DH then worked out of the spare room for a while until we converted the garage into an office.
We then made a very big jump to the present house, in which we now have two office.
Gone are the day of £2million turnover, and making a good profit, all we do now is enought to give us an income of £10k a month to cover everything.
DH runs a small management consultancy and works mainly from home, but troubleshoots companies and then charges out at £1200 a day. So if he works for only 6 months of the year as he did last year, we have enough to live on for the rest of the year until something turns up.
It is like living on a rollercoaster, when thing are up, we live the lifestyle, but we also know how to live according to our reduced income.
The children have benefited greatly as he always takes them to school, and is around a lot more than when they were little. I also think they need him more now, as teens.
There is a lot of truth in the more you earn, the more you need to earn as you spend more.
I count our blessings daily, it ccould always go pear shaped again, just like that.