Two people with the same gift can have very different characters and personalities. And discerning one's gifts will not change one's personality. So. The tag line - finding your gifts and using them for the purposes for which God gave them will resolve issues of meaning and purpose in your life - has a huge caveat. Namely, issues related to personal history and/or brain chemistry and its impact on your present character and personality will not be resolved simply by discerning your gifts. Other supports will be needed.