I also have a skin condition, no small thing either. And yeah its somewhat difficult to get over sometimes. Since its visible (unless I wear gloves and masks, lol), it can be hard to think around. It has severe times when as you said we get anxious.
Anyway, the only people damaged beyond repair is those unwilling to learn. If you put milestones on your learning based on others think about this. The childhood expectation, where and who from did you learn this, and where and who did that person learn from and so on. It turns out when you do this with things simple the origins are vastly interesting. For example the childhood expectation was pretty much ingrained into society over a long peroid of time, why? Control. Imagine a country without everybody wanting the same thing? Anarchy. Over time things have been built up into intricate in the extreme and the majority of humankind are just sheep. How do I know this? Its in the bible for one, and secondly, its not even hidden.
Uh... oh yeah. No one is lost other than those who stop learning those who refuse help, it is as simple as that. Even then a event may change their minds. Its more than hope, its fact.