I'd like to raise a quiet hand in defense of structure. Indeed, it has always seemed to me that structure defines memoir -- elevates it above mere autobiography, distinguishes it from journalism and essay, rescues it from narcissism.
Pull up a chair, draw a beer, and throw in the egg of inspiration: In other words, find a quiet place to read and open up a book of short stories. The satisfaction will last longer, much longer, than any beer (egged or not).
The best books, essays and poems make you laugh, "Oh God, me too," about things we can barely admit to ourselves. Works that when we read them, remind us that we are not alone, even in our crazy-times.
The Suicide Index doesn't necessarily tell universal truths, or even grand lofty truths, it tells the intense truth of Joan Wickersham's experience. I felt as though I walked beside Wickersham on her painful journey.