Everything on my body hurts, i get tired very fast, i'm obese, i feel like an 80 year old. i'm already 48 do i still have the chance to live without pain if i lose weight, it's even difficult to bend my knees or back. i can't reach parts of my body:?

It is not feasible to provide an opinion without additional history, physical examination may be some tests. It would be prudent to see your doctor to see if you may be depressed. Depression is treatable. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Drink more water. Wish you good health!