I used to be an extremely avid reader, able to read and memorize for extremely long stretches throughout the day. Reading and functioning working memory is a basic requirement for my job. For some reason, during the last few years, I can’t focus on reading anymore. Sooner or later, this will be a huge issue at work. But also - I love literature And miss it. What caused this and how can I change it? I never had ADHD at all.