Why do we complain so much instead of being thankful?

Complaining has become one of the most widely practiced habits for nearly everyone.  I was once a complainer.  I was always complaining about what I did not have, wanted, or needed.  Recently, about two weeks ago, I was sitting complaining about every possible thing that I could think of. When it hit me, why am I complianing when  there is so much that I can be thankful for the things that I do have ( life, health, strength, a roof over my head and so on).  At that moment, I decided that I was going to stop complaining. Hey, let's be real, all complaining does is make you feel worse.  When you complain you are constantly reminding you of all the things that you do not have or have not done, so what is the use in that. I call this negative thinking and thinking this way is not good.  It wasn't goood for me anyway because it was causing my to become depressed and I started having migraines that would not go away. I even feel that my weight gain 4 years ago was a result of my chronically complaining.

 I have began turning that negative energy into positive energy. I am focused on getting my degree and just being thankful for what God has blessed me with. I have always been taught that he does not put more on you than you can bear.  In translation, I have been through some things and I have not been broken yet, so that tells me that I am an awesome individual because I am still standing tall and strong.