I’m a big believer in keeping business and personal matters separate.
It’s best to have a steady a source of income to pay down your house loan and meet your daily expenses and save for your future needs. Eventually you want to pay-off your house. Keep a slush fund for emergencies.
In the mean time, you can invest all you want with the extra cash but don’t gamble with your personal residence or your family’s well-being.
Business deals have inherent risks — that’s why it’s business. I’ve seen people ruin their lives, relationships and marriage because they mixed the two.
Think of the people who “invested” in California real estate recently. If you’re 50 years old and put everything into flipping properties in Carmel Valley, a big crash may cause a divorce, soured relationships with friends and family and potentially an early lonely death from stress — some people may say a well-deserved one.