Hello,         Negative thoughts about oneself, future and surroundings/ environment are one of the major core issues in DEPRESSION..Feeling low/ sad sometime is ok in life in response to situations ...but if it persists,is  distressing/ deteriorating your functioning, it requires serious attention. As  per information provided you seem to be going through a depressive episode. There could be various factors  contributing to such a situation/ diagnosis .. That's Great that you took the first step towards recovery i.e talked about it..I advise you to take next best step of Visiting a psychiatrist/Psychologist  for detailed evaluation and Management of your case.Sometimes we resist seeking a professional help and the condition worsens with time.. So kindly consult a Mental health expert as mentioned above..Feel free to reach us for further queries. Regards Dr Srikant Sharma MD (PSYCHIATRY) Anandam Psychiatry Centre East Patel Nagar, New Delhi