I can think of a Bumper Sticker- because I used it at work today!
I'm pretty sure I've written this one before, but it's a good one.
Do Life by Design, Not by Default
Pretty important stuff...
So many times people fall into doing things by default, either because it seems easier, or because they don't know what else to do, or because they don't feel like they deserve to do things by design, or because they're worried that doing something by design will get them into trouble or create conflict.
By default works sometimes... but as a main way of doing life it falls very short. It also costs us in terms of self esteem and self confidence. By default has a corrosive effect on our sense of self over time.
Even if doing something by default seems like the easiest way to go, consider the cost- and whenever possible do life by design :)