On the internet I sometimes see people post a "prayer request" like this: "Please pray for me that I will be more patient and understanding with others. If I've been too harsh with anyone, please forgive me. If I've offended anyone, please forgive me"–or words to that effect.
But if you think about it, this statement doesn't own up to any particular wrongdoing. It's generic and hypothetical. So it has the fringe benefits of a confession without having to confess anything. A cost-free, public commercial for how humble the person is. The "prayer request" doesn't actually admit to any specific sin or objective wrongdoing.
I think it would be best for people to desist from statements like this. They aren't really prayer requests. If anything, it's more like fishing for spiritual compliments under the guise of a confession or prayer request.