Invocations (have You?) Options

I'm curous how many of you have ever done an invocation?
What were the results? What were your feelings afterwards?

Did you have any bad results or experiences?

You know I was once told epiletics were people who done invocation in the pass. I some how find that suspcious though.

I’ve done numerous invocations. My bad experiences were striking and sudden dizzy spells, anxiety, remorse, nausea, or fear all which cleansing relieved. These negative experiences occurred because of a lack of concentration, respect, and or I was too nervous. My positive experiences were when I concentrated successfully on the spirit, had in-depth knowledge of the spirit, was prepared and or my prayer, goal or wish was successfully manifested.