We've all been here kidda. I used to tell myself, I'm not ready, need to read more or watch another DVD. You can always make a million excuses its easy. You could probabaly crash this forum with excuses, group too big, too many men, shes' looking at me but she can't be interested, she's not looikng I can't approach.
Push your self. set your self goals and a agenda it really does work and stick to it. week one talk to random people, week two ask girl question run off, week three ask girl question don't run off. No amount of telling you they don't bite is going to work because sometimes they do, but thats the worst and really its no big deal.
99% of women will smell the fear all over you, but be impressed you've had the bottle to say hi, that will buy 5 minutes.
Push yourself man, you'll look back and think what the hell was I doing I was such a pussy.