How to know when depression is valid of its just life occurences which everyone deals with. when to know to just accept or something else is wrong ?

Depression can be a: Mood or it can become more serious as a disorder which impacts function in a # of areas of life. Depression sx’s can include feeling sad, irritable or angry; v in sex drive ; energy or motivation levels. One may socially isolate or stop involvement in normal activities. Sleep, appetite ; weight may ^ or v. Concentration, memory ; self esteem may v with an absence of joy, feelings of helplessness.