Take it from a newbie to guitar - keep practicing. That dreaded F chord was so hard for me too, and now I can do it pretty well most of the time. I found it was easier to do with the capo on - I guess the action on my guitar is a bit high. I even dared try a full barre chord the other day and totally surprised myself - it sounded not bad at all, and I had more or less banished the idea of me ever being able to do that.