How do I know if a meditation style is working for me?

Give a style two weeks of short, regular sessions before you judge it. Whether a session felt good tells you very little, since a difficult sit can still do its work. The changes worth watching happen outside practice: you notice tension earlier, or you come back from a setback faster. If a style still feels like effort with nothing to show for it after a fair trial, that is worth knowing too, and the next two matches in your quiz result are the sensible things to try next.