In an instant survey about health status during the COVID19 lockdown, I included a question like this about the change of general mood during the lockdown:

"do you feel like your general mood changed during the lockdown (as compared to the month before the lockdown)?"

with 3 possible answered: "yes, it improved" , "yes, it worsened" "no, it remained more or less the same".

Do you think it would be correct to treat this self-reported item as proxy for change mental/psychological well-being? Do you have any argument or reference that can be useful to support this?

Thank you very much for your help!