this means stop stressing out, overthinking, or complaining. put your troubles in perspective and try to enjoy the short time you have on earth.
A - "oh my god we're going to have to walk all the way back to the bar cause i left my car keys there"
B - "slow down and smell the roses"
A - "wow this is nice scenery. it's a nice night, i like walking, and we're not really in a rush."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.