Just under four hours, in the author’s own voice, gives this the feel of a short course rather than a book: finishable in a day, structured enough to be returned to when resolve starts to thin. The rating it carries is unusually high across a respectable number of listener verdicts, which on this shelf usually means the advice is specific rather than merely encouraging.
Start at the beginning and take it in one or two sittings, since the argument accumulates. If a reset is what you are after rather than a reference work, the scale is exactly right. See what is on the shelf below.