Need some insight on spirit energy?

[light]

I would like some insight into why some energies come through stronger than others? Does it have anything to do with the sitters energy or is the spirit/energy just different? I feel like spirit can sometimes come through very strong and I can feel/see/hear them very clearly and vividly-though rarely does that happen. To the point where they are persistent and insistent on what they are trying to communicate. Other times its difficult to keep a connection or understand what they are trying to communicate. Is it dependent on your own state of mind? I try to be consistent and take all precautions etc but the connections are never consistent.

I was wondering if any readers out there can help to clarify this? I feel like it's so up and down, it's somewhat frustrating, I know practice is key, I've been practicing more lately but I feel like I'm overlooking something.

Thanks in advance!