Ever feel you just can't make enough improvements because you don't get enough practice? Many speakers would agree this is something that holds them back. And to a degree, I understand. Yet I also know this type thinking is an example of narrow application.
Many litigators have told me a similar tale. They focus their energies on the argument and the strategy yet can't get enough presentation practice. Their inability to learn key techniques and then apply them to regular life prohibits their presentation and just may be prohibiting their practice. One presentation basic, being clear, can be practiced in many daily ways.