I put a red filter over our nightlight, which seems to work quite well for reading paper books (or non-lit e-readers). Now I've also ordered some amber LED bulbs, without any blue light at all, which should be a more of a permanent solution.<p>I also ordered an amber filter for my phone, although I think perhaps a better solution would be to not use phones/tablets in bed.. but I'm not sure it's realistic to always avoid the temptation.<p>The final part of the solution is to have a wake-up light. I had one before, and it's really quite essential up here in the north. But I think it would be beneficial everywhere. Studies showed that people have different times it's natural for them to wake up ("A" and "B" people), and if you wake up earlier than what's natural for you, it affects your performance. Solution? Block out all external light from the bedroom, and use a wake-up light as an artificial sunrise. (Or allow people to come to work/school at different times, but that's not always an option).