Erich Fromm said this quote
“ Both the mentally healthy and the neurotic are driven by the need to find an answer [to the problem of human existence], the only difference being that one answer corresponds more to the total needs of man, and hence is more conducive to the unfolding of his powers and to his happiness than the other. All cultures provide for a patterned system in which certain solutions are predominant, hence certain strivings and satisfactions.... The deviate from the cultural pattern is just as much in search of an answer as his more well-adjusted brother. His answer may be better or worse than the one given by his culture - it is always another answer to the same fundamental question raised by human existence. In this sense all cultures are religious and every neurosis is a private form of religion, provided we mean by religion an attempt to answer the problem of human existence. ”