As for you first question I would say that I just want to survive and expand intellectually.
What you have said is basicly true but not fully (from my perspective of course)
There is one thing about expressed INTJs (or maybe it is just me). Which is that intuition can kill the feeling. What means that if something happens I will just react since I can clearly see the outcome. So I don't have to involve my feelings in the story. This can be described as pure inertia.
People say you must use emotions to make a choice. Which is true. But I am one of those people that just charts the course and drives in that direction. Analysing everything that comes my way and will I rearrange details if needed. So I don't have to have close connection with my emotions.
Also I don't doubt myself I only doubt the data I get and plans themselfs.
But since I don't doubt myself as person I am quite calm.
As for the running example I am not 100% sure about that.
Since you can decide that running has to be your passion. (because or health for example). But in this case it is up to a debate if this is really a passion.
But if you don't do things out of pure passion then the amount of feeling in the system is lower by default/definition.
People usually don't understand how NTJs think and I think this is good example of NTJ approach. The only thing that is really F here are big picture goals.
Of course things are not black and white but in my cases things are not too far from that.