From my experience, I can say that whether I do things I want to do (and which ones) depends largely on the environment.
In summer of 2007 I got up at 5 AM and jogged because I read an article describing the benefits of rising early and upon trying it out discovered that I like witnessing the sunrise. As autumn came it became increasingly difficult to get up in darkness until I stopped. Last summer I thought wanted to lift weights but I didn't do anything. This year I read Playing to Win and saw a friend of mine who has been exercising for a year; and now I'm going to the gym three times a week.
So why am I not doing this or that? Because my external world lacks enough stuff that would change the default action from do-nothing to something else.
Transhumanists have high hopes for enhancing human cognitive abilities in the future. But what realistic steps can we take to enhance them now? On the one hand Flynn effect suggests IQ (which is a major factor in human cognition) can be increased a lot with current technology, on the other hand review of existing drugs seems rather pessimistic - they seem to have minor positive effect on low performers, and very little effect on high performers, what means they're mostly of therapeutic not enhancing use.
So, fellow rationalists, how can we enhance our cognition now? Solid research especially welcome, but consistent anecdotal evidence is also welcome.