"You reap what you sow"
So universal is this principle that it might as well be signed into law by Congress (except they've got their hands busy with a whole bunch of reaping from some not-so-thoughtful past sowing at the moment). The Golden Rule, "What goes around comes around", "Do unto others as you would have them do unto you" - it's so inescapable, yet we bash ourselves over the head with the same ole bat of bad habits and wonder what just happened. I'll tell you what just happened - you're a Karma-kaze.
The Buddhists summed it up in one word - Karma. It's the law of cause and effect. At the exact moment you have a thought, speak a word, or perform an action (causes), a corresponding seed of unripened potential registers in your ____ (life, future, soul, destiny, path, consciousness, mindstream - pick whatever word you want). The reason that so many of us fail to live by this law is that the effects don't often happen until much later; until the seed we created grows up into a flower (or weed or thorny cactus sticking us in the butt or whatever). We can't connect what's going on now with anything that just happened... because it probably didn't just happen. What just happened is perfect arrangement of space and circumstances just feng shui'ed itself into your life, and that seed you planted way back all the sudden grows up on you real quick-like. Like when I should've have been bad-mouthing my knees for all that time because jumping off of that high pull-up bar was the perfect chance for my knee to really get mangled and give me something to really complain about! It has been a year since I karma-kazed myself into that unfortunate accident. I intend for it to be the last....
The good news is Karma works in the other direction too. If you really want something good to come into your life, gear all your thoughts, speech, and actions toward it. Erase all seeds of doubt and negativity. And the part that we all forget - create the space for that thing to enter your life. You've got to pull a clutter busting clearing of crap junk food in your cabinet if you ever hope to lose weight. That negative person you're holding onto in your "relationship" hoping Mr. or Ms. Right will come along and save you? Gotta clear the weeds in your romantic garden before you can even think about getting some roses (this really just happened to a friend of mine... trust me, it works if you work it!). Get some acupuncture, a little Feng Shui, and take your karmic rewards to new heights.