For about two years not I have suffered a huge change in my personality and mental state.
I hate my family for no real reason, I hate anyone I meet and I am disgusted with everything form my body to light. I have a blood lust that can't be sated and overwhelming depression at times. I can't do anything anymore. I can't even bring myself to go to the park due to the disgust I feel for reality. I have dreams that I'd like to accomplish but I can't seem to bring myself to do anything. I need to know if there's any way that I could bring myself to follow my ambitions. Please help.

Surely you realize that you need some serious help.

An uncontrollable desire to kill or maim others, is the definition of blood lust, and along with all of your other symptoms, there is nothing that you can be advised here that would replace hands on help from a qualified psychiatrist, in a controlled setting.

Please get help- now.

You need an endocrinologist. Please see that specialty, because not many MDs will be able to deal with you, and will refer you anyway.
You could be hypothyroid, which could make you sluggish, moody, and depressed, and can also make you photophobic (sensitive to light).

ANY hormone disturbance, which this is if it's what you have, can change your personality.
It is foolish to not get help, whether it turns out to be strictly medical or mental or both.

Just seeing a doctor and telling him the same thing you told us here is a good start. You want help then you have to reach out to the right professional.