Accept social invitations and extend some of your own. Okay, so you're not in a position to entertain in grand style. Invite people for coffee and dessert or wine and cheese. Arrange movie dates. The idea is to stay in circulation and stay positive.
Negativity breeds negativity.
It's easier to stay upbeat when you have a steady diet of friends. Give yourself a break. Don't feel guilty about steering clear of people who bring you down, even if they are well meaning. Now's the time to concentrate on buttressing your own psyche and making yourself feel good. Strengthen familial bonds.