1. Sleeping Beauty

Did you know that getting plenty of sleep can actually help you manage your weight? It gives you the focus and energy you need to exercise, and to fight off illness. So make sure you're getting your rest!

2. Drink before You Eat

You ought to be drinking about 64 ounces of water each day, just to keep hydrated. But why not drink about 12 to 16 ounces of that before you sit down to a meal? That will help fill you up a bit before you start eating, shaving a few calories out of your meal.

3. Make It a Priority

If you make keeping your goal weight a priority, instead of a chore, it'll be much easier to eat healthfully and exercise long-term.

4. Change Your Routine

If your workout routine is boring, you'll find every excuse you can not to do it. Change up your program every six weeks or so, adding a new class or exercise to your regimen to keep it fresh and exciting.

5. Partner up

It can be tough to keep going with the healthy habits, especially if you have a lover or roommate who isn't as conscious of these things. Why not find a friend, one you can encourage, and who can encourage you?

6. Be a Fruits & Veggies Lover

At least once a week, skip the meat and indulge in a meal made up of fruits and veggies. On the other days, make sure 3/4 of your plate is made up of lean protein and veggies before you add the starch.

7. Find a New Way

Old habits die hard, especially, for some reason, the bad ones. So rather than giving up a "bad" habit (in this case, food), why not just find a new way to do it? For example, I love fried chicken, but I also adore baked chicken. Guess which one I've given up?

There are plenty of other ways you can help manage your weight in your 30s, but these are the ones I've found to be the most helpful. Do you have anything to add?