One of my most successful development experiences came from starting not with code, but with a keynote/powerpoint slide deck. It made me think through exactly

One of my most successful development experiences came from starting not with code, but with a keynote/powerpoint slide deck. It made me think through exactly what it was I was trying to achieve, what it would involve, and how it would work. When I realized something or other didn't work well, changing approaches only required editing a few high-level diagrams. Computer diagrams can be cumbersome compared to pen and paper, but have the great advantage of being easy to change once you've spent the time to draw them. Implementing the final solution was much easier when I could look back on how it was supposed to work. And at the end, I already had slides ready to explain everything...