Book Reports / King Lear Essay " Bottoming Out"; main points [2]

Hi I'm doing an english upgrade and i have to write a 800-1000 word essay on "bottoming out" the essay should refer specifically to king lear and address these questions...

a) Where is bottom in terms of both situation and character?
b)How can one know on e had reached bottom?
c)What, if anything, is the benefit of reaching bottom?

Im having difficulty coming up with my main points for this essay! and was wondering if anyone could help me out? That would be greatly appreciated :)