Originally Posted by amnesiac
... as soon as I start reaching the point where I have to start to commit to something, I get this feeling that I'm "locked in" and just feel anxious and suffocated and have this really insistent worry about making the wrong decision...
First, let me say I haven't read the whole thread, but wanted to respond to this anyway.
Second, you're going to have to do some "inner work" with this, if you want to be free of it. You could do this inner work with a counselor or therapist or on your own, but don't avoid it.
I recommend mindfulness meditation practice as a very significant support for any "inner work" practice or therapy. Especially Buddhist-style mindfulness on the body and breath.