[Sin]

Using the example at hand, impressions.

If I seek to impress certain people, or make a certain impression on certain people, it will make my life a lot easier than if they think I'm just a bitch.

Its like with work, if you do a good job, you impress your bosses, you get a reference to move up in life. If you don't impress them, you're not going to get a positive reference, and you've just hindered your chances for succeeding/proceeding/progressing.