This is such an important question to think about, StayPos. I have been more or less housebound with a debilitating illness for 32 years. I decided a long time ago that while I can't choose my circumstances, I CAN always choose my reaction to the situation I find myself in.
I try to focus on what my challenges teach me, such as patience, perseverance and endurance. These are huge gifts to be grateful for. There is always value in challenges, if we are open to learning.
I have also learned to pay attention to and take intense pleasure in the small 'miracles' around me. Some days it is seeing a colorful rainbow. It may be touching beautiful, downy feathers my brother brings back from a walk. It can be the Cape Francolin trusting me enough to come and eat from my hand, or the surprise of a deer in the garden...
Being aware of and enjoying these small pockets of pleasure help me to remember how much I have to be grateful for, in spite of pain and other daily challenges. But, it is a conscious choice I make every single day with the help of my Heavenly Father.