Like TheInkWell mentioned, it is hard to see what to suggest that will improve this story!

Oh boY! oh Boy! oh BOy!

This is one story that I hesitated to read at first, because it felt more like a diary thingy than a story piece, but when I kept at it for a few more seconds, i didn't regret at all.

Honestly though, I half expected the protagonist to discover that he was the same person who made the videos, perhaps a multiple personality case where the alter ego did the walks and recordings at night. But then you create another worthy angle with the direction it goes.

I also love the cliffhanger at the end.

Great work friend!