It would work better than not doing anything at all, The coaching in the Accelerator for the Paraliminals will give you insights whether you choose to listen to the recommended Paraliminal or not. It's a great technique to work on a goal for 40 days.
And you don't know, once you start you might just find you want to make time for it. That might be a goal in itself. It's a good way to learn about the Paraliminals.
Also if you think 40 days is too much consider 1 week with the Natural Brilliance course. The Paraliminals in that course are not available separately because the course teaches the 4 steps of Natural Brilliance and integrates them. That course expanded my comfort zone into what if I could thinking. It took hindsight to realise it though. When I finished the course I felt good but didn't seem to progress on the goals I was working on. I discovered I had other goals.
Alex