I get you all the way, Nikkabean -- the alone time, the work things. Some of it is your addictive side trying to give you excuses. A couple of tips I've learned:
When husband is away I climb straight into my pajamas with a bunch of things he wouldn't watch with me on netflix and eat popcorn, ice cream, & spaghetti in bed for dinner. That keeps me out of trouble.
I used to be an at-work drinker. The best advice for work I know is don't let yourself hide. Hang out at the cooler & the break room & other people's cubicles and SR. Just being with others helped me with the jitters and the crying jags, and made me feel safe.
Have a great night!