Hi I can not understand if i am depressed , I have no desire for anything in Life anymore , I am very ambitious and positive person usually but suddenly I feel strange ,I barely Wake up or do my everyday tasks , I leave my work early whenever I had the chance , I used to be a person who from all his heart feel happy if I saw a bird or met an old friend now all these feelings are nothing , no motive noothing can really make me feel anything , I cry but i do not know why , and out side i laugh and smile as normal . am I depressed ? i thought its just bad mood and it will go away but it seems its not, where shoud I start from ?