Many people believe in the immortality of the soul as a part of their faith, but relatively few know the argument that supports the belief. Perhaps that is because it has two parts as follows:
The Immateriality of the Soul
1. As a thing acts, so it is.
2. The soul/mind acts to form abstract immaterial concepts.
Therefore, the soul is immaterial.
The Immortality of the Soul
1. Only what is composed of material parts can break down and cease to exist.
2. The soul is immaterial or spiritual and not composed of material parts.
Therefore, the soul is immortal and cannot breakdown or cease to exist.
If you do not believe that you have a soul, or if you think that your soul dies when your body dies, I would be interested in hearing why you believe what you do?