We had to "hand hold" our DS. He'd have been happy languishing in his room playing online games, and would probably still be there now, several years later. But we virtually dragged him to University open days, had to constantly pester him to make Uni applications, had to do everything for him when moving in date loomed as he made NO attempts at preparation at all - we bought everything for him, packed his cases/bags, even unpacked and set up his room, made his bed, put his food in the kitchen cupboards, fridge and freezer, etc. Then pestered him endlessly to make applications for intern and summer jobs, then a year later pestered him to apply for graduate scheme jobs, and even once he left Uni and his first proper job was looming, he made no effort to find a place to live in the new city, bought nothing, prepared nothing, so it was all down to us, hassling estate agents, arranging viewing, negotiating with the landlord, then traipsing across the country in two cars taking all the stuff he needed in his new home, buying furniture for him locally, etc - he was completely in denial and simply wouldn't have bothered if we'd left it to him. He was very introverted and "couldn't deal" with other people, couldn't deal with doing things, had no self confidence, etc. We first thought he'd not survive Uni, but we pushed him through it, then we thought his first real job would be disaster, but again, we gave him immense support through the first few months.
Now, a few years later, he's a different person. VERY self confident, applied for and got a new job in London himself, no input from us. Arranged his own accommodation in London, again no help from us. Dealt with selling all his old furniture, bought new furniture in London, sorted out a small van to hire to take his smaller stuff with him, i.e. clothes, bedding, computers, kitchen utensils, and other personal effects, etc. Very confident when he's on works calls with clients and colleagues - we've heard him when he's been back home for holidays/weekends etc working from home. We've never even been down to London to see him at his new flat. He did it all himself.
Sometimes, in fact probably most times, the youngsters need some major parental "push" to overcome the fear and inertia of a relatively "easy" life bumming around at home, and then they grow in stature very quickly when out in the real World.
I saw it when I used to be involved in recruiting and training youngsters in a previous employment. So many started out barely saying a word, struggling with dealing with deadlines, colleagues, clients, etc, often turning up unwashed or in scruffy clothing, etc., but most turned into "proper adults" pretty quickly when surrounded by adults rather than surrounded by children or family. One in particular stands out in my mind as he was utterly hopeless at first - not only scruffy, but terrible BO, no social skills at all, basically just grunted when we tried to talk to him, but we all nurtured him and tried to bring him out of himself, and within a few months, he'd turn up freshly shaven and showered, smart clothes, became very chatty, and generally massive improvement in confidence.
It's why I think schools need to do more in terms of self confidence, resilience, reliability, problem solving etc., as sometimes parents can't step up to help/support their almost adult offspring and if they can't get a job, they're not going to "learn" adulthood from work colleagues.