What has tripped me up in the past with eating enough but not too much is how to build my plate or meal. Here's a quick video about the formula I use when I cook at home, choose meals when eating out. This works for most people who are low to moderately active, when I'm more active like on the weekends when I go climbing or I have a workout planned for the day I include more starchy carbohydrates and lower the fat slightly. We are all bio-individual so experiment! A little trial and error will help you find exactly what works for you.