There are many so called gospels out there. But many of these miss what the gospel actually is. The Gospel is not God will heal you. The Gospel is not about wealth or your well-being. The Gospel is about our salvation. It is a good news that cancels a bad news of our separation and rebellion towards God in our sins.
Here is a short tract that tells us succinctly what the gospel is. You can download a PDF copy here :Gospel Tract (PDF)
If you need a hard copy for your personal use or outreach, kindly contact firstname.lastname@example.org