There is a fine line between proper and realistic self-confidence and reckless self-confidence. The latter (recklessness) often appears in the religious as a belief that the Lord will not let anything bad happen to you - that you can do anything without concern for the potential consequences - that you deserve to have good things happen to you and that nothing is an un-necessary risk.
There is realistically being aware of one's strengths and weaknesses, and there is being aware of one's strengths and blind to one's weaknesses - and there is being aware of one's strengths and blind to others' weaknesses (which is a weakness, in and of itself). I do not advocate blind and/or all-encompassing confidence. Even Ammon, who was one of the greatest missionaries in our recorded canon, gloried "in the Lord" - and humans have a tendency to think the Lord will help them get whatever THEY want, rather than what HE wants to accomplish through them.
When they believe, then they shall believe!
21 hours ago