This task is similar to the one for the Symbol of Recovery, appropriate considering Cholen and Jastev are brothers. You need to compose a poem, again, the ones I have seen work have all been 4 lines long and mentioned Lord Jastev. I believe they have to rhyme as well. Once you have the poem, go to the Graveyard gate. From the Voln courtyard, go W, W, W, go trail, S, go trail, E, E, (repeat N and NE until you get out of the woods) go trail, go path. Once there, recite your poem. If it works you will get the now familiar completion message. If not, alter or make a new poem and try again until you do. Return to the monk and he will instruct you in the Symbol of Courage.