I know all about that feeling down thing. It's okay... keep in mind that there will be a better tomorrow. Okay to get down, just don't stay there long.
Remember, stay with the 180's enough to tell if they work. If not, discard and try another one.
Think of a time that he expects you to be home and then don't be. When he asks be somewhat evasive. For instance you might say "I had to buy something". Let his mind wonder. He certainly does't mind that your mind does gymnastics does he? Just be creative and not so predictable and that might help. I no, not easy but it feels good at least for a little while if you can get them to sit up and take notice.
