For project at work I use one Excel. One Excel for each different project. One single file makes later on very easy to search for key words or filter on columns

For project at work I use one Excel. One Excel for each different project. One single file makes later on very easy to search for key words or filter on columns. While I reuse part of the template for new projects the set of columns is usually new in each project but at least I always have columns for: follow up; who/with who to follow up, creation date, event (meeting, call, etc) deadline -only if hard deadline. It grows about 100 lines a week. In addition I have a long check list (another Excel) with all the things I need to do. Short sentences for each task. File is always open in my laptop and anything comes to my mind goes there and give me the required headspace. Usually I start my day having a quick look and selecting a few things to do in the day. So two Excels for each project. Yes, there is a bit of duplication between them but it is ok.