Some great advice here.
I feel your pain. We are under renovation. Constand noise and dust. No kitchen. A million little decisions to make every day. And of course, we are over budget.
You need to make some time for fun.
Rent "The Money Pit" and crack open a bottle of wine.
Plan a picnic.
Get away from the house once in awhile--even though you feel like you neeeeed to be doing chores and tasks.
Tonight we will go go mtbing together and go out for Mexican food. Yes even though we ~should~ be sanding and priming window sills and even though eating out costs $$$.
The house will always be there. It's our job to make sure the relationship survives as well.
Good luck and best wishes.