Psalm 64

I can't thinkg of the last time I complained to God. A time when I clearly stated the what I saw wan't right and that he needed to address the situation. (I can think of a number of situations where that would be a legitimate complaint) I have asked God for wisdom to deal with seemingly hopeless situations or people. I have told God about circumstances that I can't address and that he will need to work within their scope without me. But even in those times I don't think that I have complained to God. This psalm starts out by stating a complaint.  David sought out God's heart. Those two truths tell me that it is OK to complain to God.
It took me less than 2 minutes to read this psalm.
Stuart