Helaman 4 makes it really clear that there are two options in life: trust in myself/the arm of flesh or trust in God. It doesn't mean God has to or will or even can do everything for us, but it means that we should try our hardest and do all we can, trusting that He will guide, and then following His guidance once we receive it. People's LIVES depended (their own lives even!) on that, and lots still disobeyed.