MOT and general woe

I need to get my car MOT'd soon; I could just take it back to the place who did the boot and the gears and were nice and not too expensive for that, but I don't know what the standard operating procedure is for getting MOTs, and I'd appreciate some advice. (For reference, it was Cambridge Vehicle Services that I took it to.)

In other news, I am currently really quite depressed: not miserable, much, just like I'm having to smash through brick walls with my head just to do anything at all, and I keep getting so strung out that I start screaming and crying and generally throwing temper tantrums at really stupid things because I can barely cope with life when it's going okay. Unfortunately I'm still convinced that I'm just lazy and simultaneously that if I lay low and don't stress myself out too much it will all be okay.