Many christians chastise themselves when bad things happen because they falsely think that God would have answered their prayers if only they would have had more faith. A child wouldn't have died, cancer would have been healed, a job wouldn't have been lost and so on. They reasoned that they just didn't pray hard enough. Once a person starts reasoning like that, they take on the burden of responsibility for the bad things that happen in life. The next step is guilt. This is a dangerous slippery slope. Satan loves this kind of thinking because it takes the blame off of him. The truth is, bad things are the result of sin and satan is the originator of sin. God does not command perfect faith before working miracles in our lives. When you pray, God always hears and answers. You may not receive the answer instantly or the way you want it, but He does answer. And you can trust that He always does what is best for us. If you are struggling with guilt or doubt, pray, Lord, I believe, help my unbelief.
Hebrews 11:1 KJV - Now faith is the substance of things hoped for, the evidence of things not seen.
John 20:29 KJV - Jesus saith unto him, Thomas, because thou hast seen me, thou hast believed: blessed [are] they that have not seen, and [yet] have believed.
James 1:6-8 KJV - But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed. For let not that man think that he shall receive any thing of the Lord. A double minded man [is] unstable in all his ways.
John 14:1 KJV - Let not your heart be troubled: ye believe in God, believe also in me.