Confidence - 2 Reasons Most People Don't Have It

A friend shared this article "Confidence: 2 Reasons Most People Don't Have It – Thrive Global – Medium" in Facebook. It is suppose to be a 11 minutes read. Near the end of the article, the two reasons given why people don't have confidence are:

1. Congruence - the need to know that your priority is right;
2. Completion - the need to know you can finish the job.

This is what the word of God tell us about priority:

But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you. (Matthew 6:33 KJV)

And our confidence is not in our ability to complete the job, but that He is able.
For I am confident of this very thing, that He who began a good work in you will perfect it until the day of Christ Jesus. (Philippians 1:6 NASB)