I have dealt with depression for about fifteen years, and it is only since the birth of my daughter that I have developed coping mechanisms. I have never taken meds for it, but have learned that above all I need to sleep when I am starting to slip. I need to take the time to look out for myself, and that means extra sleep and rest, and whatever else I need at the time.
I hope that you can figure things out, take the time to figure out what you need, be it better support from a partner or what have you.