This has happened to me a lot:

I have often prayed, requesting that something I thought was good for me be done for me, insisting on my request, and irrationally attempting to force God’s will. And thus I did not leave it to him who knows what is profitable to arrange. And when I eventually received what I asked for, I was very sorry I had asked for my own choice; for the matter did not turn out as I had imagined. ~ Evagrios of Pontus, On Prayer.