Depression. Feel headache. please help.

I am suffering from depression. I have analysed it because I have most of the symptoms related to it. The main reason behind this which I have self analyzed is that because of my job , I feel irritable, loss of interest , lack of appetite, feeling frustrated, no activity gives me happiness, feeling sad , I get sleep but I wake up in middle of night, fatigue etc. Like symptoms I have. Is there any medicine which can boost up my mood , feel good happy and energetic. I try to do other  activities Lin singing , listening to music or gardening, but there effect is temporary and again my thoughts revolve around my job, my work and then I feel worried about my career and family and this keeps going. Because of depression I feel dizziness sometimes, shortness of breadth due to anxiety and feel headache. Please help.