Layoff happened 13 days ago, feeling lost - what worked for you?

I was let go as a sales associate this week and I am still in shock. It has been a long 2 weeks. I have a box of my things and a short letter about benefits. What did you do in the first week?

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.