According to my notes from the above Doidge book, things we can change include "memory", "processing speed", "intelligence", and "ability to learn."
While I'm uncertain whether the rest are well-accepted, being able to improve memory is well-accepted among cognitive psychologists. They trained this one subject to a digit span of 80. Also, one feature of mnemonic techniques is "speed up", or the ability to improve with practice, hence memory competitions. Method of loci is just ridiculously powerful (for the narrow and typically unhelpful types of information that can be method-of-loci'd).
Memory certainly is improvable from what I've heard/read, and it doesn't seem too much of a stretch to accept that processing speed might be improvable as well. That being said, I'm a bit more skeptical of improving intelligence (maybe studying math does it, and maybe not), and I'm not quite sure what "ability to learn" entails--if we're using the phrase conventionally, I'd assume that "ability to learn" would simply be a combination of intelligence and memory--the former for understanding something in the first place, and the latter fo...
Your job, should you choose to accept it, is to comment on this thread explaining the most awesome thing you've done this month. You may be as blatantly proud of yourself as you feel. You may unabashedly consider yourself the coolest freaking person ever because of that awesome thing you're dying to tell everyone about. This is the place to do just that.
Remember, however, that this isn't any kind of progress thread. Nor is it any kind of proposal thread. This thread is solely for people to talk about the awesome things they have done. Not "will do". Not "are working on". Have already done. This is to cultivate an environment of object level productivity rather than meta-productivity methods.
So, what's the coolest thing you've done this month?