I am scared and low energy everytime.

I work in as software engineer in Gurgaon in a MCR. I am not married and have a girlfriend with whom I don't find any support in my personal life space and understanding and always time demanding and complaining .Last year I faced immense work place bulling and pressure. Now I switched my job but feeling low energy and scared of everything now. Very weak with life. I find myself not presence minded. Earlier I used to be very funny guy and full of energy. I am very concerned about my life ahead now. Please help I need to get out of all. I am also feeling pressure to get married from my girlfriend with whom I am not sure as her nature is not helping and caring at all. I an not even able to escape of it.