One thing I do every year is scope the web for any of my wish list as this may be the best time to purchase. One thing that I struggle with is going for the best offer that comes along first. I have bought some pieces to find a week later that another brand I loved more was having a sale then but sadly my funds were running low.
You can get early access to the Monica Vinader Black Friday Sale which gives you a great advantage for seeing their offers first and knowing if it's the right piece at the right price.
I sign up for this every year so I can decide if they've got something from my absolute wish list. The baja collection is my favourite and if a lovely baja ring was to pop up I think I'did be clicking on that regardless of what will be on sale a few days later.