Calling all experts - come and give me your No1 tip for decluttering/organising please

[AddictedtoCrunchies]

Inspired by the threads on here for organising, tidying and decluttering, I have decided to do it. But I just don't know where to start.

We live in a three bed semi - me, DH and DS (6). DH doesn't have much, DS has lots of cars but they are all in storage boxes so not too much of a mess. Problem areas appear to be:

• kitchen (tupperware and other crap)
• office-y type stuff (paperwork, DS's school stuff etc)
• my clothes
• lotions and potions (although in my defence I am being strict and trying to finish off odds and ends)
• the loft. Trying not to think about that yet.

What would you do? Where would you start? What would be your No1 tip to give me just to get the motivation to even start?

Thanks in advance..

Thanks Whose!

I have done a list of everything in the house that needs sorting and it's on the fridge. DH is onboard too.

One in one out is my new mantra.

Addicted fab work so far, and great advice on here to help us all along:)
This is a good link: zenhabits.net/15-great-decluttering-tips/
And includes your mantra!