The only times I feel the Te is there is when I've completely had enough of someone (including myself). I get really focused, determined and productive. It actually feels pretty good when I'm like that. It's like some kind of veil is lifted, and I can finally think straight and clear, you know, and I'm not preoccupied with other people and their feelings, and my own feelings.
But it's rare when my Te shows. And when it does, it disappears pretty quickly as well.
As for making final decisions...for me it's helpful to keep a goal, or some kind of vision of how I would like for things to look one day from now, next week, a year from now...and make decisions according to those goals I have. I keep it pretty flexible though, but having dreams and goals is benificial. Otherwise, I'm the queen of wandering around, and never accomplishing anything.