@Evereigh I was rather slow to go back to eating out.
What helps me is I carry around Clorox wipes. I have them in my truck, the husband's truck. I pull one out and carry it into the restaurant with me. If I open the doors, I use the wipe to grip the door handle or push the bar. When arriving back home, first thing I do is thoroughly wash my hands.
Husband gave me shit about it. I told him get used to it.
@Evereigh I also take them (Clorox wipes) in the grocery store and wipe the cart handle and along the top edge of the basket where I typically touch it. Between picking up stuff, I wipe my hands and try to remember not to touch my face, until after I get home.
If I HAVE to blow my nose or whatever, I dig out more wipes and scrub my hands.