One day at a time, my child. Take each day, one day at a time. Don't look at tomorrow, or yesterday, or next week, or the exam in three days, or the funeral next month. No, no, no. Stop. Just today. Tomorrow is never guaranteed, and today is a gift.
And if the whole day is too much, break it into smaller pieces until it is small enough to get through. If you can't do one day, take it one hour at a time. Reward yourself after every hour, and always be kind to yourself, even when you make mistakes. You've been through hell and back, and no one has walked in your shoes but you, so fuck them. Chin up.
If an hour is too much, take it one minute at a time. Every minute that passes, be proud that you made it this far. And if not every minute, then just this moment. But for crying out loud, live. Moment after moment, until you fall asleep and wake up alive. Because that means you made it through another day.