I'm an experienced developer. I'm flexible and can develop apps at any platform, but I'm experiencing problems on meeting my own deadlines and asking myself why can't I finish this start-up idea/solo project of mine. I started this project alone, and I only have few consultants. Also, I never quit my job as a programmer/developer at our company. My project is an app (desktop, Android & iOS).
I use the Scrum method on this project. It's like insert-insert-insert when I want something on my app.
What's an effective method in doing solo projects so that I can finish my deadlines?