Is the early morning the best part of the day?

I'd say early morning can be the most productive part of the day, especially for creative work like UI design. The main reason is that my mind feels fresh after sleep, without the distractions that pile up later. For example, when I was preparing for that half marathon I mentioned, I'd do my design sketches at 6 AM before work - the quiet time helped me focus better than afternoon sessions. That said, I know night owls who do their best work after dark, so it really depends on your natural rhythm.