For those who have finished well, Bobby Clinton has done comparative study and identified 6 characteristics:
 
Characteristic 1. They maintain a personal vibrant relationship with God right up to the end.

Characteristic 2. They maintain a learning posture and can learn from various kinds of sources-life especially.

Characteristic 3. They evidence Christlikeness in character as seen by the fruit of the Spirit in their lives.

Characteristic 4. Truth is lived out in their lives so that convictions and promises of God are seen to be real.

Characteristic 5. They leave behind one or more ultimate contributions (saint, stylistic practitioners, mentors, public rhetoricians, pioneers, crusaders, artists, founder, stabilizers, researchers, writers, promoters).

Characteristic 6. They walk with a growing awareness of a sense of destiny and see some or all of it fulfilled. The classic example in the Old Testament of a good finish is Daniel who manifests all six characteristics .The classic example in the New Testament other than Christ is Paul. There are gradations of finishing well. Some finish well but not quite having all six or lesser intensity on one or the other major characteristics.

(Summary of Bobby Clinton's writing shared by Luis Bush, Servant Catalyst for the Transform World Movement .
The fuller article is available from the Clinton Resources at http://www.bobbyclinton.com )