I am, my husband less so. I have always been. I can't share any before and afters, but I can offer you some techniques.
1. don't acquire unless you are ready to purge. meaning, if you get a new t-shirt, be prepared to part with an existing t-shirt.
2. don't get anything you don't have or can't find a home for. if it can't be put away, chances are, it won't.
3. insist on clean counters, desks, etc. clutter begets clutter.
4. be process driven. see a task through, i.e. laundry isn't done when its put in the machine, but its done when its folded, ironed, and put away, and the inside of the machine is wiped down, and the dryer filter is swept clean for the next use.
5. technology is your friend. if you have sentimental attachments to your children's outgrown toys, take photos of each of them, put them on a thumb drive, in a photo book, etc, and get rid of the objects. you can still linger about the memories without the stuff.
6. minimalist doesn't necessarily mean bare (although it can if that makes you happy) it means spare. its like the difference between the dollar store and a high end boutique. with less stuff clamoring for your attention, you can focus on those few items that you treasure and that bring you happiness.
7. remember we don't need much, but too little can be problematic too. you didn't expect to hear this from me, but suppose your partner decides he only needs three pairs of socks, one black, one blue, and one beige, but the laundry is done every 7 days, you need to think hard on whether 7 or perhaps 8 pairs total is more realistic.
8. beware of kitchen gadgets and gizmos. Most everything can be accomplished with a knife, a cutting board, a pot and a pan. if you have a bread machine and a frozen yogurt maker, and a ice tea brewer, you might want to rethink those.
9. don't forget to scrutinize your calendar, e-mail accounts, paper files, and book cases, these are purgeable as well. desubscribe from things you don't want cluttering your inbox and your mind.
10. consider going "green" in terms of your cleaning products. this is one area where I am making a change. instead of having a bottle of toilet cleaner, another for windows and glass, another for stainless steel, another for the granite counters, another for the oven, a wood polish, a duster, etc. I am going to use down what we currently have. then I plan to replace them with nothing but the vinegar, soap and baking soda concoctions you see on recipes for on the web all the time.
Feel free to PM me for more ideas and suggestions.
Good luck to you and yours,
F. B.