One of the things I have realized in thirty years of skating:
If I am worried about getting hurt, I will get hurt.
Now, I don't mean skating cautiously, bailing should things go the wrong way. If something doesn't feel right, I step off the board and try again. That is simple enough. In fact, I'm sure tons of non-skaters that see me working on something new think that I am a terrible skateboarder that never lands anything. Even if I understand the mechanics of something mentally, that doesn't mean my body and mind are on the exact same page yet. So, if it isn't right, I step off the board, re-examine what I just did, and go again.
No, what I'm talking about is a constant fear of injury during a session that acts like a self-fulfilling prophecy. That nagging doubt about 360 fingerflips that they're going to lead to a faceplant or the twisting of an ankle. If I am worried about getting hurt it takes my concentration away from landing something and I end up getting injured because I'm not focused.
The good news is that it doesn't really happen very often. When it does happen, it is guaranteed to be the internet's fault. What?!
Yep, sometime there has is so much injury talk on Facebook that it gets into my head. I ended my Sunday session about thirty minutes shy of when I normally would because I was in my own head about injury. And I came to the realization that the only times I get in my head about injury are after I've been on Facebook that morning and people have been talking (sometimes bragging) about injuries.
Here's a tidbit of information for returning skaters or older people (40 and over) that are trying out skating: If you are not used to falling on concrete you are going to get hurt when you fall on concrete. No, those of us that have been doing it for a long time aren't immune to injury, but we've developed ways of falling to minimize injury, and we know when to step off and try again. If you've done some martial arts training (aikido, jujitsu, wrestling, judo) you'll have a leg up but it will probably still take some getting used to.
Update: In the end, I decided to leave the Very Old Skateboarders Group on Facebook. It was nice to get 100 likes on a piece of footwork in that group, but I opened it this morning and was greeted by yet another injury post. I decided to leave, but of course, hold no ill will toward the group. It is a group of fine people, but geared more toward beginner skaters and it wasn't for me.