What does it mean to be really "sure" of something?

Question

I'm just wondering if I "should" be having doubts...

Answer 1

If you feel really sure about something, then dont doubt yourself. If your mind feels at ease with what you have decided then you must be sure of it. Having doubts is not too good and will make you indecisive about your thoughts and beliefs, if you are comfortable with your decision, then you are sure...

Answer 2

It should be known that the power of any idea lies, not in its certainty or truth, but rather in the vividness of its human appeal.

Answer 3

Im really sure you get a violtion notice for chatting, just got one for whsts hanging in your tree, have a good day.

Answer 4

it's when both you gut and your mind agree about something and say that it is true.  

Answer 5

Sure of sth is being certain about sth.    Very simple.....Why the doubt?