Have you been working on a manuscript for a while? Want to make it fresh again?
Change the font. I'm not kidding. Change it. Right now.
I've been writing in Times Roman since the Roman Empire, it seems. Just the other day, I changed the entire manuscript to Big Caslon--attracted first to the name, and now I really like the font. If you're a Mac-head like me, you'll find it in MS Word.
Anyway, when I sit down to write in the morning, it feels new all over again. My characters suddenly sound smarter. Can't tell you why. Same stuff, right? A different window dressing perhaps.
Sometimes, I drink coffee with real sugar, too, except that IS better than the artificial stuff.