Having a negative attitude literally destroys you from the inside out. Having a positive attitude is the only way you will be able to achieve anything.
If your mind is fostering negative thoughts and emotions then it will seem like your life is spiraling out of control. You will begin to become depressed and you will find that your motivation for anything is out the window.
All success in life starts with having a positive attitude on the other side of the coin is you will never hear someone with a negative attitude winning.
Here are some helpful tips on how to maintain a positive attitude.