The purpose of life I've decided

I dreamed about my Grandma Dora the other night and told her about my vision problems and she said, “There is no cure for carelessness. You should’ve taken a good brisk walk every day and you couldn’t because you lived in the city. But you inherited good genes from me and my husband, thanks to which you have practically no anxiety and sleep well and wake up fresh. So what if you see double and can’t read small print? Do your best with what you have.”