Rosh Hashana

Have Mercy and Be Happy with us We say in the davening on Rosh Hashanah ותשמח במעשיך חמול על מעשיך that Hashem should have compassion and mercy on us and that Hashem should be happy with us. These two statements seem to be a contradiction. We begin saying that we are unworthy when we ask חמול על מעשיך but then we immediately say ותשמח במעשיך to be happy with us, which sounds like we are claiming to be worthy and good people?...