The Shadows Of The Night

I don't understand.
How do people move on from the loss of someone they loved?
The loss of a parent, a friend, a brother, or a sister.
How can you just move on?
Sometimes I wonder what it would be like. To move on.
Would you forget them?
Would you stop having nightmares?
Would the moments you spent together cease to exist?
The times when she taught you how to ride a bike.
The times you would bake with each other and end up failing miserably.
The times you would fight over homework.
The times when you would wake in the night, crying and she would be there, tucking you back in and sit with you, stroking your hair until you drifted off once again into a deep slumber.
The times where she taught you to be brave.
Would they go? The memories.
The pain?
Because I've tried.
But nothing makes it go. Yet, a part of me doesn't want it to leave because then what would I have left?
I wouldn't remember the laughter or the happiness. Only sadness. I thought that was how it was going to be for the rest of my life, but I was wrong. So, very, wrong.