Essays / Writing a definition paper -- hard to explain well [7]

I have been assigned to take a common word or phrase and give it my own definition. Ive been trying to pick one for a while and I just cant settle for anything.I would like to avoid starting something and then decide I don't like my word or phrase. I would just like some more ideas to compare so that I can be sure that I've picked a good subject, and I would also like too see where you guys think I could go with these words. I'm especially having trouble coming up with phrases. After I write it I would also like to post it on this thread to make sure I'm going in the right direction.

Right now I'm considering:
Expectations
Influence
Culture
Righteous
Success
Generation
Productivity
Connection
Correct

I'm also afraid that I might pick a concept that is too broad or might be too hard to explain well