[drinkcocacola]

The first thing they taught me in programming in uni was: "Divide and conquer". It took me some time to truly understand what that meant in terms of programming. I remember that when starting a software project, I always started to feel very anxious if I was unable to picture the WHOLE program in my head; after some time I understood that by dividing it into smaller problems, and solving each one of them one at the time (without thinking at all in the other parts), things will eventually be connected and work, like magic. By truly adopting this basic paradigm you start to think naturally about interfaces to connect these smaller parts of your program, and from there things just flow.