Sometimes, when I'm feeling nervous, I try to comfort my inner child by showing her stuff that she would have been amazed by. Remembering how I would have felt, if I'd gotten to see (for example) a handheld console that looked like my Game Gear* or GBA, but was much more powerful than even an N64.
My inner child is still afraid of anything that isn't sufficiently Mormon, though, so I also have to reassure her that stuff like cute visual novels isn't going to corrupt us or hurt anyone. ^^;
I don't think she's a literal person, so much as that when I get anxious I kind of regress to when I was living in fear all the time. Then I have to coax myself back out, or at least try to make myself comfortable enough that I start to feel better.
Does anyone else (not) do this? What sort of things comfort you? For us it's toys, games, and especially electronics, because we were privileged to have access to things like computers from an early age. And they were our escape.
* I bought it when I was 10, with the prize money from winning a regional spelling bee, and carried it with me everywhere. Even though I couldn't afford batteries (6x AA batteries lasted like six hours in this thing), and had to rely on AC and car adapters. It was my treasure.