Keeping a food journal is one of the simplest weight-lost tools out there. But it's not as simple as just writing down what you ate -- According to this article from Super Athlete Gabby Reece, you have to keep track of what time you ate, how much you ate and how you felt when you ate. And don't forget -- you need to keep track of your drinks too!

After time, you might start to recognize patterns in your eating. For instance, did you eat more at times when you were stressed about your job? Did you eat more when you had a drink before dinner? Once you've recognized these destructive habits, you can break them.

For more tips on keeping a food journal, click here.