If one prayer seems to go unanswered we get peeved with God.
I was walking up the hall after cleaning the bathroom when, unexpectedly, a thought popped into my head about Eve. She allowed herself to feel deprived because she was denied one tree, although she had unlimited access to all the other trees -- perhaps there were hundreds. Thus she excused disobedience.
Nothing has changed. We are still prone to do that at times. God has lavished us with blessings and daily loads us with benefits (Psalms 68:19) but if one prayer seems to go unanswered we get peeved with God. Gratitude is booted out the door. Resentment and Self-Pity rush in, eager to take over. We use this as an excuse (blame God?) for discouragement and/or sinful disobedience.
I need to remember where ingratitude leads. The horrendous downslide of Romans 1:21-32 begins with, "They were not thankful."