...become a better you.

To become better, become a better YOU.
The best type of competitiveness is competition against one's self - not anyone else.
The best you can ever be is a better you.
The most successful people in life focus on self-improvement and self-development.
No matter how hard you try, aiming to be a better version of someone else ultimately makes you second-best of the person you're trying to be like - a copy not an original.
Take Judy Garland's advice:
Always be a first-rate version of yourself,
instead of a second-rate version of somebody else.
I strongly recommend that you make this one of your resolutions in 2014 and for life.