I myself have experienced this before more than once in my life and it really really sucks. To know you can be one way but something inside of you is blocking you from playing your roll. I came across the best article on the topic in search of an answer to figure out what exactly was wrong with me and i want to share it with you guys. I hope you too can learn something about yourself in reading this, here is the link.
http://writermeetsworld.wordpress.com/2 ... 5-reasons/
remember! Swag cant be lost for ever.. it will always be somewhere in you bros