Bad luck vs Under preparation or under performance

I dont know but sometimes I believe in it. There are just days when everything seems so wrong and one bad luck follows after another. That is what I call a bad day. Like what I am having today.

Some are really bad luck. As some happens as it write down in our fate. But if any body work to there bad luck then it will be change into good luck. As Allah will do it. So bad luck exist!

I think that "bad luck" exists even if you are well prepared. Take for instance, being prepared for a presentation you have drafted, proofed, received feedback, prepare ahead of time, and are ready to go. You leave 1/2 hour early and a random traffic accident causes you to be 45 minutes late. Bad luck? I hear your concern though. There are many people who do not take personal responsibility for their actions, who do not learn from their mistakes, and end up in a downward spiral.