Hi Jama,
Thanks for sharing your story.
May wife and I have similar anxiety, both of us have full-time work, and we're talking care of 2 kids at the same time. We have big home loan, we cannot afford anyone becoming unemployed, having serious illness or any accident, our family is also fragile.
What we're doing is:
1. Talk to a phycologist when we have anxiety (luckily our employers have supporting programs which allow us to access for free);
2. Ask our GP to arrange annual medical check, this helps us stay safe more or less physically and mentally;
3. Have insurances coving our family, including income protection, TPD and life insurance, this gives us some sense of security financially.
Hope it will help a bit.
Mark