This is a very interesting question.
No matter how we take good care of our body, we can still acquire illnesses and become sick. Being sick is the most avoided thing by most people. We even have a saying that goes Health is wealth. Meaning, no matter how poor we are but we have a good health then we can consider ourselves wealthy. Or, no matter how rich we are but we have a very poor health, then we can be considered poor because all our possessions will be used for our treatment.
Everyone does not want to be sick including me. But if I already have an incurable sickness, I will not waste my life being sad about it. I will not waste my life blaming God for what happened to me because my sickness is a result of not taking care of my body. What I'm going to do is I will make the most out the time that is left in me. I will use my remaining life to spend with my family to show them how they mean to me, that I love them very much. I will spend it with them so that if the time comes, they will not miss me so much. Also, I will make very good deeds like helping other people. In my own little ways, I will help those who needs my help so that they can remember me as a good and helpful person. And lastly, I will ask God for forgiveness and repent for my sins so that when my time comes, I can look at him face to face.
Whatever happens, let us not ruin our lives with the bad things that happened to us. Let us always have a positive outlook about everything.