I Love keeping journals but I tend to be inconsistent about them.

A piece of advice that I can add to this is that, if you sometimes feel like traking your habits makes you feel a little overwhelmed, you can add little goals which are easier to accomplish.

For instance, maybe you're super tired today and you can't handle a 30 minute cardio workout. Put the bar at 5. Like that, you'll still have done something and you'll continue to be motivated next day.