I made a mistake awhile ago and I can't just undo it, I don't even know what I did really. Is there a way that I can reset the sample to its original state in sample edit.
Load the original sample again to an EMPTY PROJECT.
and/or
Undo History To open the Undo History window, tap the clock icon at the top of the screen. In the Undo History window, you can view a list of recent actions along with a detail about the action if applicable.