Hello dear, I can empathize with you.. dilemma in choosing right Bussiness or career followed by not so good results pulls you down..you might be having mild Depression or adjustment disorder with predominant depressive symptoms (more details required)...But see failures and success are part of any Bussiness..U name it and Google will give you examples...It's more important to think what excites you as a work..whether success or failure...If yes then analyse and work on it...If still problems then Consult a Psychiatrist for detailed evaluation and Management of the case... regards