Thessalonians and the New England Patriots

The Pats just finished a perfect regular season a few days ago.
I was shocked to learn that Tom Brady was a backup quarterback on his 0-8 high school team. The announcers weren't sure about the exact details, but the theme is clear: one of the most successful NFL quarterbacks of all time started his career as a 6th-round afterthought.
The church in Thessaloniki had humble and difficult beginnings as well.
I'm encouraged by the thought that God allows people and organizations with humble beginnings to finish strong.
I'd like to finish strong, Lord. Please allow me to do this, not for the glory, but for the opportunity to serve You more effectively.
Help me with my selfish motivations.