What drives you to complete projects you start?

I have started building countless apps over the years and always end up abandoning them when they're 80% there to completion. Usually it's because I start having doubts that it will fail or I lose interest.

I'm sure other entrepreneurs have felt the same way at least once with an app they've worked on.

What are some ways you have driven yourself to complete it in spite of all these self-created limitations?

Focusing on a single goal in the moment.

Multi-tasking and big todo lists make me want to reach for Flappy Bird to procrastinate.

I adopted the GTD methodology a few years ago and it was just what I needed to get a hold on my life. Here is what I do:

• Sunday is a full review day. I go over all open projects and tasks in Omnifocus and take an overhead view to ensure I'm on the right path to the long term goals.
• Every night I plan one task for the next morning. It's often the biggest, most important one that I'm likely to procrastinate on. Only after I'm done with that task, will I schedule 2-3 smaller tasks for the rest of the day.

Anytime you feel like you're going to procrastinate, what you need is:

• Small wins. Getting smaller tasks done will give you the confidence and motion to keep on going.
• Constant reminder of the long term vision.

Regarding abandoning projects when they're almost complete... if you are satisfied with the first version of your product, you took too long to launch!