> Usually, ths simplest solution is best and your approach exemplifies it: no need for a special application, simply open the text file and then go to work.

I agree. The "tool" I have simply maintains text files and provides a streamlined way to display/edit the current one, switch to some previous one and switch back.

I made it to manage context switches. IOW, it's not to serve as a journal, it's to serve as a swap partition for my brain.