
…n you don’t care — and you don’t care that you don’t care? Sometimes professional therapy is best. But short of that: find at least one (healthy) thing you do care about, dump energy into it, and build from there. The rest, for most of us, will work itself out..
…en morale, sadness, etc. but these are all pretty much different words for lowered self esteem, and self esteem is almost always the root issue — first causing a lack of engagement when we know it matters, and then causing us to accepta life lacking engagement (when we know it matters) as the norm.