Whether Ignatian spiritual exercises are good for the discernment of vocation according to Thomistic understanding of vocation?

All I know about Ignatian spiritual exercises was orally transmitted to me from priests and others, therefore I may misunderstand Ignatian spiritual exercises and in that case please correct me. According to this video and from what I hear from people around me, is that Ignatian spiritual exercises are good for the discernment of vocation (whether one should be married or live as a monk or become a secular priest) for one's life. In these Ignatian spiritual exercises, one should listen internally for some kind of spiritual movement of the soul that comes from Holy Spirit and based on these feelings discern what path in life to take. These movements from the Holy Spirit are conferring some grace to one's soul, but why believe that one should feel the receiving of grace? One typically does not feel grace, rather, it is perceived through a longer time by considering objectively one's life. From what I understand about these Ignatian spiritual exercises it seems to me that they just add to what solid Thomist Rev. Fr. Richard Butler O.P. calls "An Unnecessary Mystery". **Question:** Whether Ignatian spiritual exercises are good for the discernment of vocation according to Thomistic understanding of vocation? Some related questions that shed more light on the Thomistic understanding of vocation and which will help in understanding my question: 1. Catholic doctrine on spiritual vocation . 2. History of the doctrine of a religious vocation in the Catholic Church .