Faith as a spiritual principal can be hard at times to discern. Because both faith and doubt have works attached, we sometimes do works of doubt fully believing we are doing them by faith.
For example when Abraham had Ishmael he had waited for the promise so long that he began a work of his own to make it happen, taking Hagara handmaid(which is also accepting less then the original standard of his faith)and he brought forth fruit of his flesh, his doubt.
There may be a clearer way to discern this faster. God made all things out of basically 1)probability and 2) light/electricity.
God is a Spirit. All things made are electric particles matching the vibration nessesary to form their purpose as God made them to be.
We know that there is a brighter spectrum of vibrations and those things that create them like joy,love, gratefulness. The higher things we are admonished to think on.
We understand that other vibrations feel dark, angry, disruptive .
Some vibrations feel needy or fearful. They can cause striving, striving to understand a negative emotions your feeling.
If we stop and ask ourselves how we are vibrating. Are we steady or wobbling? Do we feel the vibration of resting in God or are we striving inside to find the right way to make it happen ? Are we enjoying like children already having what we ask for or are we trying to think of ways God could accomplish it?
If we search ourselves for our simple vibration we can discern more clearly our alignment with the kingdom of God.