Be positive. No matter what you have, where you are, or who you're with, your perception of your circumstances is more important than the circumstances themselves.
Each and every person that has ever lived has had to face obstacles. They are a part of life. We can however choose how we react to them.
There are opportunities out there even if we can't see them yet. Experience all the joys and pains. See pain as proof of life too. Revere life. Enjoy the journey.