What helps massively is to be prepared for the worst days.
Keep the medicine cupboard stocked up, calpol, plasters, ibruprofen, co-codamol etc AT ALL TIMES.
ALWAYS have loo roll, milk and bread in the house, keep it in the freezer if you have to.
Youtube and a good set of tools will become your best friends.
Budget, budget and budget again - this is actually easier when you have full control of finances - try to keep something aside, no matter how small.
Do something that's just for you - cinema once a month, gym, swimming, running, walking, anything that's just for you and away from everything.
These, I have found are the five most useful things you can do for yourself to make life easier and it will get easier.