I was extremely emotional and despondent in the early days (I make it sound like it was a long time ago, but it was only April we're talking about). If I wasn't crying, I was numb, and if I wasn't numb I was super anxious and worried.
But at some point it becomes unproductive. I've been trying anything and everything to keep calm and heal. Certainly if I'm a mess all the time my BW isn't going to want to be around me. I got books. I started exercising. I bought a zen garden for my desk. Less caffeine. More vitamins. Good night's sleep. There's always anti-anxiety/depression meds as a last resort.
When I feel overwhelmed I acknowledge that I'm feeling what I'm feeling. I "sit" with the feelings for a while... Cry into the pillow.. and then I go do something else. It's amazing what a change of scenery or activity can do. Even stepping outside and breathing in the air and looking up at the clouds for a minute.