I like to think I'm a good bat - open the batting and have had many comments on my rather nice technique and always scoring "proper" runs...
This year I've been out for two ducks (one my own fault for being horrendously hungover, and one was a jaffa); seems to be that at the minute I'm getting more good balls. I don't mind being out to a good ball. That's the idea of the game. In that situation, continue with how you play, as it's not a fault with your game (ball pitched middle - middle/off and nibbled the outside of off peg - absolute beauty).
If it's what would be perceived a silly shot (i.e. down on one knee trying to murder a boundary) very early on, then maybe it's worthwhile just taking a step back. As has been said - runs cannot be scored from the pavilion! A ball that full is going to be difficult to sweep early on, as you're relying on being perfectly in behind it - not like it pitches a bit shorter and you've got that split second to adjust if needed.
Just keep plugging away - train hard, play easy!