Faith is easy as long as we don't trust the ego. Ego is always needy and wanting. Faith does not work under any conditionality, including wants and needs. It only works unconditionally, accepting whatever God's will is for us. Faith vacates self/ego from our consciousness and invites Truth to merge with our consciousness. When that happens, our thoughts and feelings are expressions of truth. Truth sets us free. Free of fear, wants, needs, and sin. Free is to be unconditional, free from the bondage of self. Free is Truth, Love and Faith. Free is easy, free is rest.
As soon as we tense up, we are trusting self again, instead of God. We can become sensitive enough to sense our loss of freedom. The more we can accept everything the more grateful we become for the freedom. Hence, we love it. We love the Truth above everything else, this is worshiping God, and we miss it more quickly whenever we get sidetracked.
A certain degree of truth can be received psychologically to some benefit. But the bible is about an absolute perfection. A man can't do that. We need His grace to go beyond our human limitations.
It's not that it's bad to only go partway. It's just not complete.
And who measures the standard of Christ in our lives? People want to judge their improvement or level of advancement for themselves rather than against Christ.
Just imagine if God told Noah to build a boat...without telling him the desired dimensions. Would Noah have built a boat that took him 120 years to build on a whim?
Did God give us a standard of achievement or are we left to judge this for ourselves?
Indeed God has a standard...and that is the full stature of Christ. Be perfect as God is perfect.