i think what bijuu is trying to say is that dan is in a never ending cycle. He has to pay his debt and has to pay for his grandmas hospital bills. He doesn't have the freedom he needs. Not only that but this will cause his body, time and energy. If the grandma dies all his efforts will be wasted and we know that this man is an ass**** who doesn't treat Dan right, he'll treat him right one day and the next day he'll do things Dan says no to.