I like your classification of anti-akrasia techniques. Here's a slightly different way of phrasing the same classification: All anti-akrasia techniques either

• Improve your ability to do things despite having conflicting crap in your working memory,
• Prevent your working memory from getting filled with crap, or
• Increase the amount of space taken by your current task so there's no room for conflicting crap in your working memory.

Looking at that third category... suddenly, dual N-back training doesn't seem like such a good idea anymore.