When one's awareness of GD becomes stronger and he realizes how much care and concern He has for his creations, "he will accept in his heart and on his tongue whatever GD decrees for him." He will want what H'shem wants for him and nothing more. He will serve GD with his entire body and soul being happy with what H'shem has provided for him under all circumstances and conditions.
pg 469
Nefesh Hachaim
One who spends more time working on building his yira than needed is considered stealing from his time of learning.
Gate Four, Chapter 9 pg 146
Alshich on Avos
Rabban Gamliel says It is a mistake for one to learn Torah, without being accompanied by some work at least enough to provide the bare minimum of one's material needs. If he neglects to do so, he will eventually fail. " D'vei Eliyahu, "One might think that a person can sit idle and not do anything to provide for himself". The Torah, therefore, states in order that H'shem .. "will bless you in all the work of your hands that you undertake". Stresses the point that you may not rely on miracles. You must do something and then GD "will bless the work of your hands"
Chapter 2, Mishna 4