One of the greatest things that people can do for others is to show them love. Be strong when they need you most. Be a listening shoulder should they need to cry. Support them. Even if they are scared and you are scared, be the rock that they can hang on to when they feel like they are going to fall.
And if they tell you that they are afraid they might not live long, don't leave them. It's very scary for them. It's very lonely when they turn around and there is no one there to hug them when they need it most.
Even when it is hard, you gotta be strong.