One more comparison of a compass to holy spirit. First, try placing a compass near a phone mouthpiece. You will get it pointing as if the mouthpiece is directly south of the compass, even if it really is straight north. Natural magnetic sources, shields (especially steel), and temporary electromagnets (such as high voltage power lines) will throw off a compass. Additionally, it is possible to reverse the polarity of your compass. If you are in the tropics, it can be difficult to even know if your compass is off like that.
The holy spirit can also be corrupted. Placing it too close to a religion that insists that it is the only reliable guidance is like the phone. The compass will always point away from it (or toward it, depending on which pole is exposed to the compass). No external guidance is your steel shield. And goings-on within the congregation (along with congregational corruption at the hounder or hounder-hounder level) can throw off your compass.
And it can be corrupted because the polarity is backward. Jehovah himself can order you to sacrifice, usually preventing you from experiencing happiness. Instead, you are supposed to go on endless missionary work (usually in some hellhole country like Nigeria), waste your time pious-sneering, or reach out for more work and headaches in the congregation. Some end up in Beth Hell or monastery work because of the bad polarity of their "holy spirit" compass. Jehovah himself is corrupt--he corrupted the Bible, and that corrupts your "holy spirit" compass as well as certainly as a compass the polarity of which has been reversed. And, if you are in the tropics, you wouldn't even know it's your compass.
If anything, the holy spirit is even worse. It is possible for a person to find out if the compass is backward--especially if they know what time it is and can see the sun. In the northern hemisphere, the sun rises in the east and will always be in the south at high noon. In the southern hemisphere, it will always be in the north. But, if you are in the tropics, it is possible to be confused and you can only tell east from west if you see the sun coming up. (And that's if you haven't been brainwashed to accept a west-rising sun as a possibility.)