For the first 7 days, do 2 steps without fail:
1. Diarise your plans in the morning.
No need to make a ploughman’s breakfast out of this, just make a point of it. Jot down some plans which you can realistically expect to tick off by the end of the day.
2. Declutter 1 Small Thing in the evening.
That’s not even a 'small area’ yet, merely a Thing: a purse, wallet, drawer, shelf, etc. It need take no more than 15 minutes but it should be completed, not half-done or shuffled around.
What you are aiming for with these steps is to set a daily rhythm of beginning with a sense of direction, and ending with a sense of completion.
revisit the How To Declutter slide show on my DIY page.