But what if they have continuously TONS of different visions? Could they have issues in which vision "trust" and finally use Te to accomplish it?
As decisive and composed I appear to be, preferring Ni, Te and Fi at the same time creates massive internal conflict. The worst battle is unquestionably the Te vs. Fi debate, followed by the Ni vs. Te clash.
The purpose of my introverted intuition is to gather the information necessary for future plans. And the issue is that eventually, Te's demands for external results will hastily push the Ni to work faster, or to stop overall. Yet Ni is uncomfortable beginning on an incomplete picture; it wants to be an expert of the field before it even starts.
Ni: Wants to get it right.
Te: Wants to get it done.
Both sides want their way set in stone, so I (used) to resort to procrastinating to manage the polar oppositions. Though it partly kills me to know my tangible input is not reflecting my capabilities. Without Te, Hendo Barbarosa is correct when he says Ni can loose touch of reality (and hence, inflicting another burden for the Te.) Another nuisance of Ni is the rush of insightful visions appearing at the least convenient moment. I agree there's just so many ideas....but so little time. God-forbid, I have the actual attention deficit disorder and these epiphanies serve as an overwhelmingly irresistible distraction.
My problem is that I have far too many 'epiphanies' for one unreliable attention span to direct.
On the contrary, my innate knack for seeking out systematic improvements neutralizes this drawback.
I write my ideas down as Kra does, then re-organize them by genre, date, personal value, time-cost or all the above. It's not unusual to see me carrying around a notepad to store thoughts.
Additionally, I must always clarify my objective before initiating a task. This will limit the amount of time spent on day-dreaming and inner-self debates. Like you, I can't 'choose' between visions once the Ni cycle flows, though it is due to a hatred of disrupting the cognitive consistency, than a distrust. I also need to tie the scattered ideas together into one applicable structure or they'll be discarded.