The Butterfly effect is "Small variations of the initial condition of a dynamical system may produce large variations in the long term behavior of the system" - (Chaos Theory)-http://wikipedia.org .
How the hell is it relavent to me?? . Most of the times, we wonder about "why the hell am I here?", to me the answer is simple ..
Somepoint of time we did something to which this is the consequence....Let me give an example,some times I think why haven't I got admission into IIT? the answer is either I haven't put in right amount of effort to get into IIT or I could not make-up my mind to give-away one more year .. So every moment we have infront of us is a CONSEQUENCE.
As you notice these changes for that particular instant seem to be infinetesimal..But on a long run,These small moments bring a helluva change in the life we lead.. So, I think every moment has to be tuned with perfection if we have to lead a better life.,coz some point of time, if we think "had I done this, or had I not done that .." it would have been very late...