It just hit me that "Wingardium Leviosa" is the "Hello world" of the wizarding world.

!rant
is pre-debugging a good thing?
I have a habit of implementing a project(for e.g. a mobile app) like this: See the project, break the tasks to be done into small parts(Like UI layouts- setting, listeners to implement , graphics involved, background threads required, databases necessary, etc.)and then code each of them step by step , while simultaneously testing their working (For all possible test cases I could think of ) side - by side. this results in my project getting developed in far more time than other people, but I always have something good and working all times to show to my bosses.But I really feel stupid when I spend 2 hours handling the animations and ui while I have yet to look into databases and other more important stuff

I guess that's a habit from my good old python days(its IDLE was a playstation for me) but I wish to know better approaches,if any?