Young people often feel like being an adult is difficult. To transition your son into doing these things for himself you have to teach him to do them for himself. It only takes a minute to pay a bill. Once he realizes how easy it is, this shouldn't be a problem. Depression shouldn't cause him to shy from responsibility. I would suggest that you find a way to get him involved in some form of physical activity. Physical activity improves depression just as much as medication. He needs to get out and live. Make arrangements to do things with him that force him out, like walking in the park and going to lunch. the more things you get him to do outside of his house the better off he will be.