Psychological Egoism and Immortal Soul

Standard formulations of Psychological Egoism, such as Will to Live, are vulnerable to the following argument: 1. The conatus 'A to B' is meaningful only if B entails something that A lacks.  2.  But, in Will to Live, Will is already living.  3. Thus, Will to Live, and other variations of Psychological Egoism are empty.  However, there is one case which resists the criticism--when A and B are modes of Living, but are distinguished in some other respect.  This obtains in Christian Theology, when A = Temporal Life, and B = Eternal Life, i. e. when a mortal yearns for the immortality of its Soul.  So, Psychological Egoism can be an adequate foundation of Political Individualism only by adopting this concept of the Psyche.  Hobbes' and Locke's versions might do so, but Spinoza's does not--his conatus is in every case the persistence in being of infinite Nature, even if it is inadequately represented as the desire for continued living of a finite Mode.