When you have happiness, the main importance is not how many times the good things happen to you. It depends on how they relate to you. If you know how you can rely on them, you will be happy even though you are sick or disabled.
Many patients feel much more happy than when they are not sick. They approach to Dhamma because of their sickness and find out the true happiness in their own mind.
You accpet the truth. You don't refuse the truth. You are not concerned with your future. All can make you live happily in the present moment.