One way to ensure a breakthrough is to plan one and then commit to it. Let's say you want to complete a project, but are beleaguered by interruptions and such. I'll use writing a book as an example. Ask several friends to review a chapter that you have not even started, or are just messing with. Give them a date that you will have the chapter complete and to them. Make the date a challenge, but doable if you focus. Once you have committed and put the structure in place for your wee miracle to occur, you can make it happen.
Personally, this method is one of my most tried and true. I respond very well to deadlines, especially if I have committed to them in a way that involves others. Promising ourselves is often not adequate - we need to let other people know what we declare.
This practice combines all three elements of my daily practice: telling people about our goals, taking action, and making requests.