Lake turnover occurs when the layers of water with noted temperature differences begin to mix together and the water and debris that has been sitting at the bottom of the lake begins to mix with the layers of water above it.
Definition of cautious. : careful about avoiding danger or risk cautious investors cautious optimism.
So by putting that all together we can come up with something like this in layman's terms, which makes a little bit more sense. So here it is! Generally speaking, self-Confidence is: A feeling or belief in your powers and abilities.