I'm struggling to concentrate at work and I'm not sure why. I have anxiety so I'm wondering if it's that, but I work from home and find myself really struggling to concentrate at times. For example, today my manager asked me to do some research into a topic for a couple of hours and then report back what I found. I struggled to motivate myself and would read and reread the same sections as I just couldn't concentrate. I felt sleepy even though I wasn't tired, I got myself a coffee, some water, opened a window, etc but nothing helped. Then 20 minutes before my 'deadline' the stress of it motivated me enough to be able to concentrate and finish the task. It happens quite a lot. Other times I'll have tasks that are more engaging and I can get in the zone and concentrate for hours, so I don't think it's a cognitive issue.
Does anyone experience anything similar or have any ideas if it's anxiety or something? Thank you