Freud talked about the bliss of the womb as the source of
many of the same things, as did others before Freud.
While no doubt true to some degree, remember that a single theory that explains everything actually explains nothing.

I remember a sociology professor trying to illustrate this point.
While discussing the cause of the French Revolution, he quickly dispensed with the theory that the revolt was due to the peasants being unhappy. The peasants are always unhappy.