Top 6 Getting Things Done Software

Is there an app which can motivate me to use these apps?

I recently started using redmine, set up many projects and tasks and milestones installed the android app. I updated everything meticulously for a few days, then I missed two days, then four, then a week, then a month. Now I just can't get myself to use it.

This was my second attempt at getting my shit in order, but I keep faltering. Is there any hope for me?