One who trusts in H'shem is happy to fulfill his obligations both to man and the Creator of the World. If H'shem has not provided him with the means to do so, he is not bitter yet is relieved that he is free from the burden of being meticulously careful in how he uses the means H'shem has provided for him.
pg 359
Nefesh HachaimSays H'shem in Yirmiyah, "When someone learns Torah and wisdom I consider it as if he had created the Heavens and established the entire world" This is why Torah scholars are referred to in Shir Hashirim as pillars that are holding up the world.
Gate Four Chapter 11 pg 151