That's why it's important to use automated variables as much as possible, so one isn't bearing the burden. Any number of variables can be tracked automatically, it's the ones you have to do manually which become a chore and burn you out. My Zeo sleep data will never be a chore because all I have to do is put on the headband before I go to sleep which has long since become an automatic habit, while writing down my weight on an index card would become a serious irritant if I had to do 5 or 6 of them.