Ambition is an earnest desire for some type of achievement or distinction, as power, honor, fame, or wealth, and the willingness to strive for its attainment. For me crossing the line in being ambitious is killing or hurting things or people you care about, or just any person is crossing the line, to get what you want. There's a lot of things in life that I want right now, but I'd never kill someone to get it. Common ambitions in society are wanting to be someone famous, and wanting what someone else has. I think wanting what someone else has is the most common, we all get jealous, and we all want more. The thing is we all want these things, most of the things we want we don't need to have. The way society is though, if we don't have what everyone else has we're not "cool" or "popular", it's almost like were outcastes for an object or thing we don't even really need.