When in mourning, think of everything as a box, and the box contains a button and a ball. When it first appears, everytime you move, the ball hits the button, which triggers the sadness of losing a loved one. But, over time, the ball gets smaller, and only hits the button every once in a while, yet, it's still there, and will never go away.
This advice has helped me see everything in a whole new light, and has helped me understand that everything will get better.