Mini Habits, 10 points, ~2 months. Still early to say but this seems so effective it puts it in a league of it's own. This helped me to exercise every day, eat healthy, and do mindfulness meditation each day (among other things) for the past few months.
Stoicism, 7 points, 1 year. Nothing can ruin your productivity as negative emotions can. Stoicism in the form of Daily Stoic proved effective for me in reducing negative emotions. Now I have a habit of reading one page of Daily Stoic per day.
Mindfulness meditation, 7 points, 4 years. It has been on and off for me few months at a time. While on, seems like it improves my ability to concentrate and I notice I'm procrastinating easier. Also helps to reduce negative emotions.
ZTD (or simply a TODO list), 4 points, 5 years. A simplified form of GTD.
Reducing alcohol consumption, 4 points, 1 year.
Nicorette gum, 2 points, 1 year. It works better than caffeine for me.
Modafinil, 1 point, 2 years. It makes me irritable so I use it only when I know I have the whole day for myself.
New one I invented: one-day personhood. Has similar effects as stoicism and mindfulness. Still too early to say the strength of the effects.
This is my response in which I propose a different approach.
"Eight Short Studies on Excuses" link is wrong.
Judging from previous experiences with coursera, you can cover a lot of gorund in a nine weeks online course. It should be enough time to go through the most important neuroeconomics experiments and central ideas.
Me and my friend are organizing a new meetup in Zagreb but I don't have enough karma to make an announcement here. Thanks!