The best thing about good karma coming back to you is that you've earned your good fortune, so you don't need to feel guilty for enjoying it. But when you get some big-time karma payback today, spread the blessings around. You're blessed with so many wonderful things right now: you can afford it. So if a rock-star parking space opens up, let the driver behind you have it. If you find a couple of bucks on the street, leave them in a friendly barista's tip jar. Keep the good karma flowing.