A farmer plants seed in the spring and after proper sun, rain, and fertiliziation, food is available to eat in the fall by God's grace.  The farmer has work to do, but he is not responsible to make the food grow, he cannot make it grow for he has no power over the seed.  He can only make sure the ground is ready and the seed is nourished.  So it is with our faith - God is responsible for the increase, we are responsible for keeping ourselves out of environments that choke out the growth.  When we do this, the main thing we have to do is wait on God to do his part.  Amen.