How it will be filmed

I want my film to be filmed from the 1st person. I want it to be the first person in how he feels in his emotions. for example, i want the Main Character to stay in shot the whole time, but the camera angles and the lighting to help convey the emotions he feels. The lighting will have to be quite dark and gloomy and the weather will have to relatively miserable, which is lucky because it will be filmed in winter which will be perfect for me.