You know that feeling of being, well, not right? You're always tired, you think you might be getting sick, and you feel generally off your game. That's called malaise and it's more common than you might think. That's because it can be associated with a wide array of lifestyle habits, infections, chronic diseases, certain medications and emotional distress (maybe caused by a lack of passion, posse and play). Sometimes it comes on suddenly -- other times, it can creep up on you slowly, eroding your quality-of-life bit by bit. Either way, it can make work and your social and family life difficult to manage.

If that's how you feel, here's a three-pronged approach that can get you back to your energetic, happier self.

-- Get a medical check-up to determine if an infection, a chronic condition or a mental health issue (depression, anxiety) is the cause of your malaise. Also, ask if any of your medications could be the culprit.

-- Upgrade your diet. Nutritional deficiencies can cause weariness. Go for seven servings a day of fruits and vegetables; fatty fish such as salmon, and lots of water -- no added-sugar beverages. Consider taking a multivitamin-mineral (half in the morning and half at night).

-- Manage stress by adopting healthy sleep habits, exercising daily, meditating, and engaging with your posse.

-- Find an activity that fuels a passion. It can be following or playing on a sports team, volunteering for a cause, or working.

For more help defeating malaise, check out "4 Natural Ways to Enhance Energy Levels" at iHerb.com/blog.

Dr. Mike Roizen is the founder of www.longevityplaybook.com, and Dr. Mehmet Oz is global advisor to www.iHerb.com, the world's leading online health store. Roizen and Oz are chief wellness officer emeritus at Cleveland Clinic and professor emeritus at Columbia University, respectively. Together they have written 11 New York Times bestsellers (four No. 1's).