Not telling people is absolutely fine, it's our choice. This isn't a problem. You will know in your heart if it is right to share your diagnosis and it doesn't have to be done right away. I share when there is a need or I feel comfortable doing so. Only a couple of people I work with know, about half my family know, some "friends".
The running away from problems however might need some work In my 20s I did tend to run away from my problems. In all sorts of creative ways, from general avoidance, to ignoring them, to literally running away. I don't know if that was aspie or youth. Most of the time this is fine, but there are problems that get worse when you run away, like relationships and electricity bills..! So I would suggest practice. Take a breath, face the problem head on, even if you cringe, meltdown or draw blood with your fingernails (been there), but face it. After a while (or a decade) it gets easier and becomes more of a nuisance than a catastrophe. Eventually you will realize that most people, even your closest family members, are so completely obsessed with their own lives, your embarrassment will barely register on their radars.
The running away from problems however might need some work In my 20s I did tend to run away from my problems. In all sorts of creative ways, from general avoidance, to ignoring them, to literally running away. I don't know if that was aspie or youth. Most of the time this is fine, but there are problems that get worse when you run away, like relationships and electricity bills..! So I would suggest practice. Take a breath, face the problem head on, even if you cringe, meltdown or draw blood with your fingernails (been there), but face it. After a while (or a decade) it gets easier and becomes more of a nuisance than a catastrophe. Eventually you will realize that most people, even your closest family members, are so completely obsessed with their own lives, your embarrassment will barely register on their radars.