The safest prison is the one whose prisoner insists they are free.

The confinement nobody escapes is the one that has been reclassified as freedom. If you have decided your limits are choices, there is nothing to push against and no reason to look for a door. The certainty is what does the holding.

Rather than asking whether you are free, ask what you would do differently if you were. If a specific answer comes quickly, that is worth examining. The speed of the answer usually tells you something.