I do my best to remember for myself, and will share on here, is that every effort you give, every day, is worth it. Sure, it pays off for accomplishing staying true to your challenge of decluttering JUST ONE ITEM a day. What I also want to teach everyone about is what I call The Motivation Meter.
You may be a self-aware person and know of this, even if you call it something else. Human beings haven't evolved enough to have unlimited motivation. Some of us have strong internal motivation that will keep us moving in a forward & positive direction in our life. It does take us far. Some of us rely solely on external motivation to do anything and everything, and many fall somewhere in between.
One thing a day sounds deceivingly simple. But, seriously, life has ups & downs. There will be a hard day (or more than one) during this journey when just accomplishing our goal of decluttering one item will seem too hard to do that day.
Once someone does overcome all those external AND internal forces trying to derail them and is able to JUST DO IT on those hard days, I encourage them to take a short moment to let the feeling of Accomplishment, Pride in Yourself, Overcoming Adversity, etc. WASH from the mind down the body.
Besides the short-term accomplishment of doing your decluttering commitment for the day, you will begin collecting "motivation points" for later use. Every time we collect a motivation point in our day, they group together and inspire later efforts. I am living proof that refilling your motivation meter with motivation points will drastically change your approach to many things in your life. :-)