We all believe we gonna do great things but we wont you know..
Yes most people live ordinary lives. However doing great things is a matter of being valuable to others or looking at value through your own eyes.
My angle in life is that I both look at what values I uphold and what values people see in me and I try to keep those two perspectives on me for reference.
I think you should not be too concerned with what slogans others use. That is things like you are unique or you are talented or you are this or that.
If you really want to know where you are at always ask yourself what I really can do and what I know. That should always be your reference point. Be your own fair judge. Do not expect others to give you always meaningful feedback instead always try to look at what people tell you and make the most use of it for yourself. That is even bad advice can be good advice if you know how to use the advice.