Take therapy sir I believe you should discuss your concerns in detail with a mental health professional to gain an insight about nature of problem and ways to overcome it through psychotheraputic techniques

Hi Thanks for seeking help here. The negative thoughts are part of depression. It suggests you are still in depression. Else Ur personality which is bothering you.  This can over with cognitive behavioral therapy .. We can do few free assessments and then will start plan accordingly. Do regular exercise and relaxation.