You can listen to a different Paraliminal every day. The boredom is a fair indicator that the non-conscious mind is saturated. Once a bucket is full there is no point in filling it more. You need to move it and fill another bucket.
The Paraliminal Accelerator has a 40 day plan toward a goal and you find you use a different Paraliminal every day.
Once a day is plenty and skipping a day is okay too. Mixing and choosing a Paraliminal that goes with the theme for your day is good too.
No need to listen to one Paraliminal more than a week. If you are ask yourself if you need to refine your goal a bit. I don't mean change it. I mean how you are approaching it. Sometimes we try to push a door open however that might be a door we should be pulling. So take a break, step back and reassess. That's where taking a couple of days off from Paraliminals can help. It is good to become an observer from time to time. Not only to take action.
AlexK