Jesus promised that he would not leave us alone, and that promise was fulfilled with the Holy Spirit. The promise wasn't to only have the Holy Spirit within us, but that we would be empowered by the Holy Spirit. The power is there, available. How available are you? How open are you to welcoming the connection? In times of trouble, when doubts rise in your mind, the power of the promised Holy Spirit in you can defeat and put down those doubts and fears.