The only issue I can address is the absent minded: Write it down. I use a day planner. Each day is about half a normal sheet. It has a silly string to mark the current day. Each item I put a little box so I can check it off when done. At the bottom of each page I write things I know of ahead of time. e.g. [] attend webinar on SP. As the day goes on I write stuff on the top going down. Periodically (usually Friday) I review my week to make sure I did not miss anything. Also I use a different notebook for general notes from meetings etc.

I have found this helps with the anxiety of fear I forgot something. As an added bonus, when someone tries to task me, I have a list of other things I am trying to do, and I can understand if I can accept the task. Especially when its my boss and I can then reply 'is this new task more important than that task'