The main reason why we look constantly to the Gita is that, whenever we need help, we may get it from the Gita. And, indeed, we always do get it.
In the Bhagavad Gita, there is no long discussion, nothing elaborate. The main reason for this is that everything stated in the Gita is meant to be tested in the life of every man; it is intended to be verified in practice.
The Gita is the greatest gospel of spiritual works ever yet given to the race.