I've lost something.  In the last few days.  Something intangible.  I don't even know for certain what it is, but it's gone.
I'm not who I was at the beginning of the week.

Very well, yes I do have an idea what it might be, but that's based entirely on a neurosis.  Time will tell, one way or the other.
And if it's not that, what then?  If the neurosis proves false, as neuroses should, will this sensation of something missing vanish too?