What are some awesome/secret beauty tricks & tips for a girl in her 20s?

I'm 22, I live in Southern Ca, and I work at a Day Spa, and I've really been involving myself more in this 'world', so to speak. :) I've been taking care of my skin more, more body more, quite smoking, and I was wondering what women's secret beauty tricks are.

Like I know if I have just a few min. to put make-up on I dab some very light golden shimmer on the inside of my eye above my cheek bones and sometimes down the line of my nose and it gives me a summer glow…
What are some of your beauty tricks? What would you recommend?

Do you wax everything so you're smoother longer? do you tint your eyelashes so your eyes pop more?

Anything and everything really! I'd love to try it. :)
<3 B