Ok here's an obvious list of things that should be useful. Obviously you agree (as I do) with the Leo Babuta concept of 'habits' versus 'discipline' [0]. I'd say these are just the basis - but I believe all of them will help if you can apply them consistently. But I'd also say that there's not much point in trying other techniques until you feel you've consistently tried these for a year or more (potentially I'd say up to a life time of trying).

1. Headspace (daily meditation) [1] - helps with focus

2. Wait But Why on procrastination [2]

3. 4 Ways to get motivated [3] - I like the second one about a 'pre-game routine' doing the same physical activity just before starting work. I do the yoga 'sun salutation' twice (takes about 5 minutes, helps with back problems)

4. Leo Babuta's free 'Focus' book [4]

  [0]: http://zenhabits.net/discipline/
  [1]: https://headspace.com
  [2]: http://waitbutwhy.com/2013/10/why-procrastinators-procrastinate.html
  [3]: http://plan.io/blog/post/146892730063/4-ways-to-get-motivated-when-you-dont-feel-like
  [4]: http://focusmanifesto.com/