The spiral, drawn out

Follow it round once. The part that keeps it turning is not the slip. It is the sentence you say to yourself about the slip.

A burst of high zealDepletionSlippingI have beenabandonedShame, thenwithdrawal
The meaning you attach to the slip is what closes the loop, not the slip itself. The diagram shows a loop running through: A burst of high zeal, then Depletion, then Slipping, then I have been abandoned, then Shame, then withdrawal.