Me and its dark in the house and im very thirsty -_- how do i overcome these fears?

Unclear question: It appears that you have phobia of dark spaces. You could address that keeping lights on, however, it would be more important to seek therapy for your phobia. Please remember that phobias are irrational fears and not a sign of weakness.

Agree w Dr. Singh: Consider Cognitive Behavioral therapy, Behavioral Therapy, psychotherapy, Exposure therapy or hypnosis to deal with your fears about being in the dark in your home.