Gratitude.
It's not an easy virtue, even on a good day.
Far easier is an attitude of entitlement--that sniveling and singularly unattractive presumption that what's yours is yours by virtue of merit or morality or some other human achievement or distinctive.
While I've not seen any hard data to support the following claim, I feel confident in saying that gratitude has been, for most of us, an especially elusive virtue in the Year of Our Lord, 2020.