5 I am the vine; you are the branches. Whoever abides in me and I in him, he it is that bears much fruit, for apart from me you can do nothing. 6 If anyone does not abide in me he is thrown away like a branch and withers; and the branches are gathered, thrown into the fire, and burned
John 15:5-6 (ESV)

Jesus is the true vine. 

When we keep Jesus' commands, we abide in him. The key to producing fruit in your faith is through abiding in Jesus.