By the Holy Spirit . He is called the Comforter. He indwells you. Take encouragement because God is there in your afflictions. It can be translated as tribulation, trouble, anguish, persecution, burden, and, of course, affliction.
Afflictions come in all different shapes and sizes.
Sickness, financial difficult, loss of a loved one, an unsure future, an auto accident. But also, and this is something very important, affliction occurs in the heart in that place where we get frustrated, confused, and hurt. Because we live in a fallen world. And it takes a world with trouble in it to train Christians for their high calling as children of God, and to carve upon their souls the features of the face of Christ. Perseverance must finish its work so that you may be mature and complete, not lacking anything .