My opinion is as Ahmad's openion :)

If you don't make mistakes, you aren't really trying.
Keep trying to do something. 

First of all if your going to do something the chances are 50-50 right? you may succeed in first time but the failure always behind.

cowboy...

<font class="Apple-style-span" face="Verdana, Arial, Helvetica, sans-serif" size="2">"It takes sixty-five thousand errors before you are qualified to make a rocket." 
I believe there is not such thing as a mistake, therefore, we are not "failing" unless we choose to see it that way... I prefer to ADD (which means somehow we are 'succeeding' ) the experience to my collection and keep moving. We can always learn from both : 'failure' and "success' <img alt="" src="http://www.italki.com/fckeditor/editor/images/smiley/msn/regular_smile.gif" /></font>