Driving Mad!

This is the first time I've seen my own swing. I can see quite a few problems with it.
1) I swing far too long back on my backswing
2) I don't keep my head still
3) I turn my body too much on the backswing

I'm sure if a pro analysed it they would see even more mistakes, but how far do you go with analysis before you become too critical and stop enjoy playing the game any more?
Of course if I didn't watch so much Viasat Golf then I wouldn't be so critical of myself, but I can't help comparing myself to the pros who are in a completely different league altogether, and I'll never reach their level in my lifetime so I don't really know why I bother! LOL! ;-)