Tip 111: Get your smug on

Pass a guy, who can't be more than 21, wearing a tie, in a BMW, stuck in traffic, and just try to not get your smug on.
You can't help it.  As you blast by his 318i the look of self-satisfaction spreads over your face like a "One Less Car sticker" spreads over the top tube of a second-hand Repco.

BONUS TIP: As they say, silent smugness is wasted smugness. But shouting at SUV drivers is déclassé and lecturing your friends is so undergraduate.
Express your smugness clearly but quietly - carry your helmet with you all day, leave your right pant leg rolled, or wear spit all over your shoulder and a big smile.

Tip 49: Go Somewhere!

Sometimes you're riding to keep your quads toned. Sometimes you want to make the air rush across your face-skin.  Sometimes you're burning off a half pack of caramel Tim Tams that you DID NOT EVEN enjoy eating.
Sometimes you're burning through the hilpster ghetto trying to make the girls with tattoos notice you. (Maybe they'll get your name tattooed on them?)  {RDNG TIPS}
But sometimes you're after spatial displacement; sometimes the things and people you need are far from here; sometimes you have to surrender to the geographical economics of your city and just fucking eat up the miles. Revel in it.

 BONUS TIP: Don't lie to yourself about the Tim Tams.

Tip 12: Mount your bell and lights on the bottom of your handlebars

Global overpopulation is the inevitable endgame of this species, Homo Sapiens Sapiens.  A species so wise it invented redundancy.  Real estate grows scarcer, and it seems ever less likely the innovation-bots at a thousand Googles could save us from the impending Malthusian crush. 
You can help.  There's real estate out there just waiting to be claimed.  Take your bell, your light and your trip computer, and flip 'em.
Magic.  All that space you never knew you had, right there on the most crowded part of your bike.  Sprawl all over that newly exposed bar tape like a new suburb consuming subdivided farmland. Luxuriate a liitle.
You can even try out new hand positions.  Narrow accentuates the cleavage, while the off-symmetrical tweaks those neck muscles ruined playing too much angry birds. 

BONUS TIP: Plant your hands extra wide and feel the rushing air dry your armpits before you arrive in the office.

Tip 3: Get a Crumpler

Crumpler is hot. Crumpler is now. Crumpler is function. Crumpler is form. Crumpler is debonaire. Crumpler is devil may care.  Crumpler is nylon. Crumpler is style.  Crumpler is sex. Crumpler is love. Crumpler is the night. Crumpler is Soho. Crumpler is John Lennon. Crumpler is Yoko Ono. Crumpler is next summer's teenage anthem. Crumpler is a black and white show reel. Crumpler is the sky above. Crumpler is the road beneath.
Other bag brands make baby jesus cry.

BONUS TIP: Crumpler make back sweat real bad

Tip 2: Move through stopped cars at intersections

Cycling is a healthy pursuit, and nothing ruins it like sucking on the exhaust of a queue of cheap cars from a time before emissions standards.
The only place to be at an intersection is at the very front, where (if you don't glance in your helment mirror) the cars are hidden from your hawkish gaze.
There may be times you are discouraged. There may be times the traffic is packed tighter than a pannier on the way home from the farmers market.  There may be times you are riding a Dutch bike with handlebars like the wing span of a Hercules C-130.  Do not back down.
The car drivers won't mind.  They are in their warmth capsules only because they crave to be cradled and swaddled as they never were by their mothers.  If, in making your way to a front-of-grid position, you are visible, at their wing mirror, pressed bodily against their tinted window, they will appreciate the human presence they are so starved of, however fleeting it may appear.

BONUS TIP: Pros can take on this mini-labyrinth even as the lights on the cross street turn yellow.