Going from Catholic to Jehovah's Witnesses is a step toward truth. The JWs lead toward truth, but only unadulterated Scripture is truth. Jesus is truth and when an organization tells you they're "truth", they're calling Christ a liar unless they are an exact representation of him. JWs are not, but they're truth-ish.
They will teach you to question what you have been told the Bible means, but then they will substitute that with what they tell you the Bible means. They pull you out of a spiritual rut, but then replace it with another one, if you allow them to.
If you're the apathetic type who went with the flow in Catholicism because you couldn't be bothered to find out for yourself what the Bible actually teaches, JWs can shock you out of your funk. You can use that momentum to launch you into a search for Bible truth or you can just let them put you back into a different apathetic funk of their own design.
The JWs are a stepping stone to enlightenment as to what the Bible actually contains. Some on this forum have decided the Bible isn't truth and that's a separate issue. If you believe in the Bible, JWs can point you in the right direction, but if you follow them all the way, they will eventually lead you into idolatry by placing the Watchtower over Scripture and the Governing Body over Christ. So, use them as God uses them, but jump off the train before it derails into blasphemy and idolatry for 7 old men and a magazine. Just remember, only Christ can save you; the Watchtower Bible and Tract Society can't.