Thyroid cancer,2 back surgeries,emphysema COPD

Very depressed because they weren't able to get all of the cancer was too invasive. Fractured a lumbar in 96 tried to kill myself jumping off a bridge broke many other bones to. I have been having constant sciatica and nothing works I need help please my job is very physical and also constantly being on my feet am a cashier at a gas station. I have 2 steroid inhalers one rescue inhaler have to many breathing treatments a day twice is a steroid mix too.