I think my strategy (while very simple) will be the following:
Purge, purge and purge some more by continuing to micro examine things that I have. I plan to sell most of my extras, but I would also love to give some away too.
Never buy anything that is not an absolute necessity. I so often see something that I think is a good deal and just buy it ... it could be something small like a lip balm or similar, only to arrive home and realize that I have enough already.
That I have downsized quite a lot over the last year and a half! I was just looking at some of my old photos of makeup. I no longer have a traincase, but a smaller (much much smaller) makeup tote, I don't have all of the shampoos and toiletries that I used to have, and I have gotten rid of clothing I never wear. I tend to stockpile my favorites, so I actually have "backups" of some of my favorite styles of clothing.
I've gotten a lot better at saying "no" to