1) Confidence is a fine trait. Over-confidence isn't. Laurell K. Hamilton 

2) Over-confidence in the early days has led to a surfeit of caution ever since.

3) Therefore, both over-confidence and under-confidence may play a part in creating an environment in which accidents happen more readily.

4) Perhaps over-confidence has meant the taking of poor risks or a laziness over home-work.

5) This failure must be ascribed, more than anything else, to the arrogant over-confidence engendered by our early victories.

6) But we must beware of overconfidence - we have had false dawns before!

7) Optimism based on a realization is never overconfidence.

8) Overconfidence in oneself is the first step to fail.

9) Avoid overconfidence —— it could be your greatest enemy.

10) At the banks[], overconfidence in "risk management" methods (which were mostly worthless) and ill-considered compensation practices were serious contributing causes.

11) Stan didn't like thinking that way, for overconfidence could jinx an operation.

12) Overconfidence was his destruction.

13) Overconfidence and regret aversion are two basic concepts in behavioral finance.

14) The overconfidence of economists might even be thought a manifestation of animal spirits.

15) Overconfidence : Don't overestimate yourself or you may get hurt. Decide carefully.

16) That's because overconfidence can lead to overtrading, which studies have shown leads to individual investors drastically underperforming the market.

17) Oddly enough,(http:///overconfidence.html) you see - saw between overconfidence and self - doubt.

18) After a convincing win in game 1 Kasparov fell prey to overconfidence, losing games 4 and 5.

19) Marco Rubio, who won a three-way race in Florida for a Senate seat, warned his fellow Republicans against overconfidence.

20) In the project investment, the relation between investment level and cash level depends on the balance between the manager's overconfidence and market assessment on project.

21) My self - confidence ranges from great self - doubt to overconfidence.