TerryD wrote:
Ashariel wrote:
I think I'm incapable of understanding what mindfulness actually
is. It's one of those concepts that goes straight over my head, and makes no sense to me.
I can't meditate either; my brain just always goes full-speed.
I don't get it. 
The words in bold describe my understanding of mindfulness.
Mindfulness is the discipline of bringing your awareness or attention to the present moment.
It is developed through meditative exercises designed to make one aware of the habitual mental activity that draws the attention away from the present moment. One becomes familiar with self-observation and non-critical analysis of one's own cognitive activity.
The typical introduction is meditation on the breath, or perhaps on the sensation of some small edible items in the mouth, such as raisins or nuts. People often get mislead by the idea that one is supposed ot "empty one's mind" this is not the case at all. Rather, the goal is become aware of the tendency to revisit memories (Did I remember to turn off the gas before leaving for work? Should I have said that to my boss? Why did the man on the corner give me that peculiar look when we walked past each other?) or inhabit imagined futures (will I be asked to come to a party on Friday? Do I need to wash clothes for the second half of the week? If I kiss my lover in the morning will she be pleased or annoyed?) The typical mind is constantly full of this sort of thought projected into the past or future. One's awareness moves from thought to thought like a bumblebee gathering pollen.
The goal of meditating on the sensation of breathing is to pull awareness away from it's habitual jumping from focus to focus in the habitual way. No one expects that activity to stop altogether, but the goal during such meditative practice is to acknowledge the thought and then refocus on the breath without getting sidetracked by the thought or caught up in related emotions
Example:
You breath in through the nose and feel the air flowing into your lungs.
You become aware of a small muscular pain in your right ankle.
"I am experiencing pain in my ankle," you acknowledge and then return your focus to the air as it fills your lungs.
You recall that your mother in law is coming to visit on the weekend. You start to recall your last conversation about this.
"I am thinking about my mother in law's visit," you acknowledge and then return your focus to the air as it empties from your lungs and you breathe out through your mouth.
You suddenly think that you are getting the hang of this and wonder what happens next.
"I am thinking about progress in my meditation," you acknowledge and then return your attention to your breath as you begin to draw air in through your nose again.
Etc.
It brings relaxation, focus and the awareness that you can choose what to think about and how to tune your awareness to focus on that thing.
I think this is something that comes naturally to many on the spectrum because it is similar to what we already do when we hyperfocus.
The thing to bear in mind is that it is a very simple process, although people mythologize it.