When Jesus ordained the 12 disciples, He sent them out to preach, heal sickness, and cast out demons. The ability to do those things was an incredible gift to receive from God. None of them, however, were first on the list of His purpose for their lives.
Radio Sermon
The Holy Spirit: Our Guide - Part 2
If you feel the weight of uncertainty or regret, remember to trust the Holy Spirit and He will help you gain confidence and guide you with wisdom.