Organization is the key (one of them).
I see that recently I’ve listed what I’m doing with the current 5 languages. That’s good. But even better is to know at a glance exactly where I am in every activity. I need virtual bookmarks.
It would help to have everything electronic accessible in files: Current Dutch, Current German etc.
I’ll get into the habit of carrying the smallest notebook possible with book titles and page numbers. The easier I make it for myself to pick up a book—or open a file—and continue from where I left off, the better.