Moving frequently helps declutter. Marrying a non-clutterer also helped me, as he keeps me focused and demands that I justify bringing new stuff into the house. This has helped my own thinking process about purchasing things, so it has helped to eliminate clutter by generating less of it in the first place. Watching "Hoarders" repeatedly was extremely beneficial and motivating...I will never see "stuff" in the same way again.

Also, doing YMOYL and determining to get out of, and stay out of, debt was enormously beneficial. Now I still do that "how much life energy will this object cost me?" calculation, so I buy very little. Identifying my own gazingus-pin weakspots was enlightening, too, and I'm sure I've saved thousands of dollars over the years (and lots of landfill space) by not buying them anymore.

Yes, good luck to you!