There is a something like a centre of gravity of self-identity. It belongs to feeling and will more than to thought, being the home position where the feelings that spontaneously arise in response to events, pre-understood as belonging to your life, are located, as well as the fulcrum from which the closely related purposive acts gain their effectiveness. It is the heart, the mood in the sense of Gemüt ("Gemüt is cognate with Mut (courage) and the English word 'mood'. Gemüt conveys the sense of the interior-personal core of a human being and the affective-conative aspect rather than the purely or exclusively cognitive." as one commentator on Heidegger puts it, tracing its provenance to Eckhart and Boehme.) If you rest in an alert state and are disenganed from the flow of thoughts you are gathered in this core. If we stretch the use of word phenomenon to describe this, and so stress its phenomenal character, which is certainly not the whole story, there are two features that are immediately apparent. One is that, as quasi-spatial, as having or being a location, it is contained within a larger space about which we can say little other than that your centre is not tied to a particular set of coordinates in that larger space, it is contingent in relation to it. The second is that its initially phenomenal character assimilates it to the imaginary and that this places the status of the imaginary into question (c.f. Colerige's primary and secondary imagination) as much as it does the reality of the self. Its imaginary character seems to be the tip of an iceberg that descends deeply into unknown regions. In this way it is also decisive, or voluntaristic; it is chosen by virtue of a series of decisions that extend far out of sight. In encountering an other we are immediately and intuitively aware of an entirely different set of decisions, which in some sense challenge our own, no decision ever being final.