My big trick is 2 things depending on where I am and what I'm doing---If I'm home I take a long shower or bath, facial mask, something on that line. My other big help was to polish my nails--you can't eat with wet polish.
My other is sometimes I just need some flavor in my mouth--listerene strips really help--I usually take 2-3 at a time.
Good luck--getting thru the hard times makes the good times all the better!