<human>: Can you summarize the given text in a few sentences?

I'm not sure if this is the right place to post, but I'm asking reddit for help. If there is a better place to post this please let me know. 

I live in American and my grandfather lives in South Africa. I am 18 he is 70+. He has been in the hospital for about two months, but a week ago some organs began to fail and he was moved to ICU. About four hours ago he slipped into a coma and now it is a matter of hours/days. 

I am very glad my dad got time off work and is able to spend some last few days with my grandfather, but I am currently in college so there is no way for me to visit my grandfather. I am saddened by all the things my grandfather will miss: he wont see me graduate college, get married, or have children. I am going to miss him so much.

Reddit, do you have any advice on how to prepare myself for the inevitable and how to stay positive in a time like this?
<bot>: Grandpa is extremely sick. I don't get to say goodbye. Can anyone help me mentally prepare for his death?