It's not exactly a "no-sweat mission." God has given us an important calling that definitely includes sweat, tears, pain, and hard work. With all diligence and intentionality, we should take on the "task of tesifying to the Good News of God's grace" (Acts 20:24).
However, it's easy to start looking at it in the wrong ways, and we really should ask ourselves every so often, "Am I putting pressure on myself in ways God never asked me to?"