From Wikipedia:
A philosophy of life is any general attitude towards, or philosophical view of, the meaning of life or of the way life should be lived. The term is generally used in an informal sense, meaning a personal philosophy whose focus is resolving basic existential questions about the human condition rather than an academic philosophical endeavour
In the physical science there is knowledge of the layman and knowledge of the ones who studied a subject in university (or on their own). Their knowledge is a specialized elaborated and sophisticated form of layman knowledge. Can the same be said of life philosophies? Is there layman philosophy? Is a philosophy of life layman philosophy?