For years I started planning Christmas in September, finding out if only my parents were coming to us, or my aunt and or sister and her children as well.
I had very little to live on, so presents were usually sewn, embroider etc. so obviously I started early in the autumn.
Most people are paid monthly now, so shops have to have Christmas wares in stock practically as soon as the school summer holidays are finished.
If this annoys you, stay away from the shops that already have Christmas goods on display.
All my life, I have detested being in the last minute for anything and having to rush around - my mother was an exponent of the art - we were always running around trying desperately to finish the last tasks before visitors arrived. I swore I would never been like that, and I have kept the promise I made my twelve year old self.