Simple budget for a tight month - what worked for you?

My income is now a fraction of what it was as a customer-service rep and I am trying to cover the essentials. I have been trying to stay organised about it. I am nervous about falling behind. Did lenders work with you?

Check for energy assistance programmes. I got a credit that covered two bills.

Sell things you do not use. I made about $500 from a weekend of listing.