One who trusts in GD knows that his employment does not earn him his pay. He understands that his gains and losses are all in the hands of H'shem
pg 449
Nefesh Hachaim
Learning Torah, like any other endeavor, is akin to climbing a ladder. He must start at the bottom and work his way up. This is why H'shem loves the learning of one who begins Lo L'Shma. As he grows his assent will be L'Shma.
Prologue to Gate Four, Chaper 3 pg 122