Rock on! If you were glued to your TV, laptop or mobile device last night for the 12.12.12 concert to benefit Hurricane Sandy relief, you’re not alone.

After all, according to its site it was broadcast to more than two billion households worldwide!

Let’s face it — these guys may be aging but they sure can rock!

As Bruce Springsteen took the stage to open the show, here at MJD of course, we were channeling our inner careerist. One by one as each entertainer illuminated the stage, we were reminded yet again of quintessential career tips that hold true over time.

1. Stay true to your brand. Adam Sandler was quirky; Kanye West shocked with that leather skirt get up (seriously, what was he wearing?). Jon Bon Jovi flashed his pearly whites as he rocked out to his Jersey anthem, “Who says you can’t go home?” Billy Joel tickled the ivories and Paul McCartney was well — Paul McCartney.

2. Follow your dharma. Merriam-Webster defines dharma as “the basic principles of cosmic or individual existence: divine law.” According to Deepak Chopra’s Web site, he defines it as the following:

“Dharma is much more than one’s career or focus of activity in life. Dharma is the unstoppable force of evolution in the cosmos that impels everything forward toward self-awareness. Everyone has a purpose or dharma. If we didn’t, we wouldn’t exist at all. You don’t need to search the world to find your purpose. The clues lay hidden deep in your heart.”

Taking one look at the elated faces of entertainers from Jimmy Fallon to Richie Sambora, one can easily surmise, yes, they are definitely living their purpose.

3. Take care of yourself. Sure, in our world it’s not like we’ll be bopping on stage in our sixties performing to thousands of fans, but why not consider yourself an athlete or performer who must take really good care of themselves to last the test of time? We’re talking the basics here: Sleep, nutrition, exercise. Repeat daily.

4. It’s a marathon, not a sprint. As cliché as this sounds, we’re in this for the long haul. Assume your career has legs and will take flight if it hasn’t already. Anticipate to soar, expect greatness but of course that means you’ll need to put in your time and practice, practice, practice.