Ah, The infamous question. Everyone wants to know. Is it the diet? The exercise? Genetics? 


and the dreaded answer: There is no trick! 
Consistancy, Dedication, and Belief will help you reach your goals. It's not about denial or excessive drudgerous exercise. Find ways to incorporate healthy activity and food into your life and you'll be naturally fit. Everyone can do it, but only those who make the effort will succeed. 


You MUST find a sense of balance in your life. Success is found after trying several options and then sticking to one that works. 
By using moderation in every aspect of your life you can enjoy the abundance of pleasures that life has in store for you. Being fit is not anywhere close to a life denial or pain. Rather, it should be an experience of challenge and reward.  Challenges are not easy (that's why they are challenging) but they are valueable and worthwhile lessons. 
If there was a "trick" it would be to constantly challenge yourself so that you are always improving.


Do this today: Think about one thing in your life that you could challenge yourself to. Any category. Here's a few examples, "I wonder if I could do 15 pushups without stopping" or "I challenge myself to give up coffee for a week" (that's for all the New Yorkers) or "Could I better organize my life and my priorities to get more done this week". Be creative! Feel that sense of reward, and then post it here so you can inspire others to do the same.