It works. Remember Pavlov's dogs salivating every time they heard a bell ring? Just as association worked with them, it can also work with you. If you attempt, as nearly as possible, to study the same subject at he same time in the same place each day,
you will find that after a very short while that when you get to that time and place, you're automatically in the subject groove. Train your brain to think French on a time-place cue, and it should take you no longer than ten minutes a day to get into the French mood. Not only will you save the time and emotional energy you once needed to psych yourself up to French or whatever else, but the experts say you'll also remember
more of what you are studying.