When we set out as disciples, we never know whether we'll meet with success like Jonah or opposition, like Jeremiah.
It isn't always something connected with us, sometimes it's simply due to people's hardness of hearts. It's not always the packaging of the message, nor the tailoring of the information to the target audience, sometimes it's a stiff-necked situation. Nor should we think Jonah a more successful, effective prophet than Jeremiah.
Our witness to Christ is our responsibility. The results are up to Him. Frustrating, perhaps in the short run, but consoling in the long run.