Generally there are several kinds of people: The easily frustrated, not so easily frustrated and very positive and not so positive and the somewhere in between. You and I are one of the above.
Majority of us face disappointment and hardship that fueled their doubts. But as David fled from enemies who sought to kill him, his response was not to run from God but to praise God. Yet David still hints at doubt. His cry, “Be merciful to me and answer me” (Psalms 27:7), sounds like a man with fears and questions. “Do not hide your face from me,” David pleaded. “Do not reject me or forsake me” (v. 9). David didn’t let his doubts paralyze him, however. Even in those doubts, he declared, “I will see the goodness of the Lord in the land of the living” (v. 13).
Then we as his sons and daughters of Christ. “Wait for the Lord; be strong and take heart and wait for the Lord” (v. 14). We won’t find fast, simple answers to our life questions. But we will find—when we wait for Him— a God who can be trusted.