Gadol hatorah
Tell them to start living a life of COMPLETE -not half-true Faith and trust directly in Hashem the king of kings ruler of the world. AKA not faith in messengers rather it’s rebbe’s or segulahs or physical messengers as a doctor or lawyer but turn directly to our loving father Hashem for any help you need in anything as we say in the end of benching from tehillim 34 “v’dorshei Hashem lo yachsiru kol tuv” which means for one that seems out Hashem for help in his time of need lacks nothing.
Let them start to make a learning seder on the sefer of chovos halevovos which is also made in English today called duties of the heart and is a complete translation of the sefer focused on the steps and rules of living a life of COMPLETE faith in Hashem and then the person gets the best reward. The gift of happiness cause nothing in the world can effect him when he truly knows wholeheartedly that everything Hashem does is for his good and benefit.