I don't know what You mean by 'hidden powers' but you don't use a spell. If you are referring to things like talents, spiritual understanding, spell casting, or 'enlightenment' then it's not a spell you need. Things of this nature requires soul searching, research, and practice, a spell won't grant them, it's a journey you should take.
Look into meditation to help you connect with your inner self, or deities, it can also help with many different things spiritually and health wise. I don't know your path but pick up some books by reputable authors to help you learn. Once you have footing, practice, live a 'magickal' life every day [I say magickal because I don't know your path, but whatever it is, live by its teachings the best way you can]