I relate to this very much.
I was in a dull state of nerves, such as everybody is occasionally liable to; unsusceptible to enjoyment or pleasurable excitement; one of those moods when what is pleasure at other times, becomes insipid or indifferent.
So what specifically got John Stuart Mill out of his funk?
Reading the poetry of William Wordsworth.
Tcheck out the full post over on The Art of Manliness.