Now for how I eat/what I eat basically in more detail.
I am a calorie counter. I watched it close while trying to lose weight especially. Once I reached my goal I found it was much easier. Have some wiggle room at this point. Partly because I now am trying to maintain my weight and not lose. I recommend starting a food diary for people just beginning this life style change. After yrs. of eating this way I no longer have to have one. But do plan my meals ahead usually. Basically rule is when trying to lose weight burn more calories then what goes in. Now I try to burn what goes in. No more, no less. For me it is amazing how much one can eat to obtain their goal and keep it if they eat healthy and not all that junk food that is out there. Also I still eat at McD's. I just watch what I eat. There are simple answers. I peel the breading off chicken nuggets. Order sandwiches with no condiments & take the roll off, salads no salad dressing, no-fat milk for ice mocha, kids meals with apple slices, etc... As I have said before do your research. Can find loads of calorie charts on line.
Example of a day worth of eating for me is as follows:
Breakfast: Egg white with onions, spinach,(egg yoke is where most the calories are, plus I am allergic to egg yokes I have found through the yrs.), serving of cream of wheat with sugar substitute and cinnamon, non-fat milk, (take my multi vit. with that) , 1 cup of coffee, (300 cals)
A.M: Snack fiber bar or fruit (100- 150 cals)
Lunch: A small salad , fruit, fish (400 cals usually)
Snack: usually some type of grain or veggie (150-200 cals.)
Supper: soup, veggies,a grain of some sort, fruit, (500 cal.)
Snack: low calorie pop corn or a fruit (100-150)
That is one example of my daily intake of calories/eating, since I am active and only trying to maintain my weight I try to eat no less then 1750-1800 calories a day usually. I also as I have said now have some wiggle room so there are days when I splurge and get a frappe or something like that. But for the most part I have eaten healthy for so long I no longer can stand most sweets. It takes time to get to this point. Just remember we all screw up from time to time. I know I especially did back when I first started changing my life into a healthy life style. But don't give up. Realize your mistake or whatever and start a new. Take it one day at a time. One step at a time.
So basically eat healthy, get active, if already active get more active, and do your research. AND STAY AWAY FROM FAD DIETS AND FAD EXERCISE PROGRAMS AND GIMMICKS.
I will add more as time goes by: Good Luck in your new adventure into a healthy life style!