Don't forget you can buy the essences from the witch in the swamp.
Forgot about her, i have all ready did that, but if i end up doing a fresh game without her hut unlocked and the swamp as well, i will have to save scum until i can get that Sanity quest from the lizardess in the ruins so that i can start getting them, shall i do a fresh game some times in the future after whichever features and stuffs that can help me out are added in in the updates?