I like this random quote that is now my senior quote- " just because your trash doesn't mean you can't do something. It's called a trash can not a trash cannot."
To encourage myself to socially branch out, I've begun to say "Give people the reason they should like you."
Also, "if good things must come to an end, then bad things must come to an end too." Also my quote, from after the fabled Gwinnett County flood of '09. It wasn't too bad; it just was really annoying to deal with.