Sunshine of my life

I have a friend named sunshine.
Sunshine has no gender, it's not even real. Sometimes when I wake up in the morning, Sunshine tells me I am going to have a beautiful day. Often, when I am grappling with darkness, it tells me things will be okay. Sunshine has seen me through testing times, broken relationships, foolish decisions, indecision and excessive happiness. I have tried to rename it instinct, kung fu, destiny, superstition and even insanity. But Sunshine describes it best because I am still alive and hopeful.
I have a friend named sunshine, it's like BB King's guitar Lucille, sometimes when I am blue Sunshine calls my name.