It depends on you. I have been at it for 6 months. I am and have always been debt free. I also have always had a simpler life than many people. Though living in the USA, not simple by world standards. I haven't simplified like someone going on a new diet. Just had some emerging change in interests related to retiring and reconsidering what things mean. So lots more personal or human sized interests. Things I had interest in long ago and never did.

Things like biking, hiking, nature, astronomy, and some I had in mind for some time but never did like kayaking etc.

Now all these can be like biking and cost you as much as someone who is a classic car collector. Or you can keep them to levels that get the most for the effort and buck. A little extra brings good returns, but you don't need to reach the nth level in them. There is even a negative interest in that for me. This way they don't cost all that much. Can be very interesting, and engage you at a deep and complex level that seems very worthwhile.

So if you change your perspective you can do it. One important point is not to live a bare bones super minimal existence. You can have interesting, complex, engaging interests without them requiring tremendous resources. Having things that hold your interest, and engage you are important. There are many ways to do that without spending bunches if you search them out. Learning those things also is like another adventure of something you may not have done before now. A new chapter in your life, makes it a bit easier to alter your general direction of perception.