These are 3rd generation tips.
I started my riding career on a Lil' Indian mini-bike in 1970.
Been on the street since 1978.
When riding in the wet, you can see the brake lights of vehicles 2 or 3 or more ahead of you, by watching the reflection off of the road, under the car directly in front of you. This gives you a large margin of safety, even if the person in front of you is late braking/asleep at the wheel.
To help prevent swerving or drifting when checking over your shoulder to change lanes, (you do, right?
drop your opposite elbow. Works a charm.
When approaching highway interchanges and exits be wary of the last second "oops", when people realize they are missing their turn off/exit, and try to go for it at the last second, possibly cutting through your lane.
If you're in the right lane on the highway, be very careful to check entrance ramps for cars/high speed pursuits (actually had that one happen) by looking over your shoulder (don't forget to drop the opposite elbow) and looking up the entrance ramp.
In the vein of the 2 second following rule, add 1 second for each inclement factor. If it's dark, 3 seconds. Dark and raining? 4 seconds and so on.
Don't panic or hit the brakes if you hit gravel in a curve, if you keep your cool, the bike will just 'drift' through it and be on it's merry way (barring excessive speed of course). If you approach left hand curves from the centerline, you have a whole lane to drift through before you run out of road. Same is true in a right hand curve from the white/fog line.
If you're tired, roll up your jacket as a pillow at the handle bars and lay on your back (park first!) Actually
very comfortable on a bagger.
Watch your mirrors 50% of the time, obviously at stops but especially on the highway. (ever had someone pass you at high speed that you never saw coming?)
Don't ride when you're upset, cool off first.
Then go for a nice ride to collect your thoughts
Last but most important, keep the shiny side up and the rubber side down!