Job and Paul did like us. They wavered.
Job 3:1-10
Afterward Job opened his mouth and cursed the day of his birth. And Job said, Let the day perish on which I was to be born, and the night which said, A boy is conceived. May that day be darkness; let not God above care for it, nor light shine on it. Let darkness and black gloom claim it; let a cloud settle on it; let the blackness of the day terrify it. As for that night, let darkness seize it; let it not rejoice among the days of the year; let it not come into the number of the months. Behold, let that night be barren; let no joyful shout enter it. Let those curse it who curse the day, who are prepared to rouse Leviathan. Let the stars of its twilight be darkened; let it wait for light but have none, and let it not see the breaking dawn; because it did not shut the opening of my mothers womb, or hide trouble from my eyes.
Job 3:26
I am not at ease, nor am I quiet, and I am not at rest, but turmoil comes.
Romans 7:14-25
For we know that the Law is spiritual, but I am of flesh, sold into bondage to sin. For what I am doing, I do not understand; for I am not practicing what I would like to do, but I am doing the very thing I hate. But if I do the very thing I do not want to do, I agree with the Law, confessing that the Law is good. So now, no longer am I the one doing it, but sin which dwells in me. For I know that nothing good dwells in me, that is, in my flesh; for the willing is present in me, but the doing of the good is not. For the good that I want, I do not do, but I practice the very evil that I do not want. But if I am doing the very thing I do not want, I am no longer the one doing it, but sin which dwells in me.
I find then the principle that evil is present in me, the one who wants to do good. For I joyfully concur with the law of God in the inner man, but I see a different law in the members of my body, waging war against the law of my mind and making me a prisoner of the law of sin which is in my members. Wretched man that I am! Who will set me free from the body of this death? Thanks be to God through Jesus Christ our Lord! So then, on the one hand I myself with my mind am serving the law of God, but on the other, with my flesh the law of sin.
As long as we are on earth we will be pressured by the enemy, the world and our flesh. Only when we will be in heaven, will we never feel lost and will our faith never waver again.
Hardships are good for us.
James 1:2
Consider it all joy, my brethren, when you encounter various trials, knowing that the testing of your faith produces endurance.
2 Corinthians 12:7-10
Because of the surpassing greatness of the revelations, for this reason, to keep me from exalting myself, there was given me a thorn in the flesh, a messenger of Satan to torment meto keep me from exalting myself! Concerning this I implored the Lord three times that it might leave me. And He has said to me, My grace is sufficient for you, for power is perfected in weakness. Most gladly, therefore, I will rather boast about my weaknesses, so that the power of Christ may dwell in me. Therefore I am well content with weaknesses, with insults, with distresses, with persecutions, with difficulties, for Christs sake; for when I am weak, then I am strong.