Experience makes a man perfect in his profession. when we start doing a work as a fresher's then it very difficult to do that work. And a lot of fault occur in our work and it also take more time .But slowly slowly day after day we start doing that work correctly or time of work is also decrease. Now we can say we have got some experience in our work. But it comes after a lot of bad experience. so we can say that experience come from bad experiances. Bad experience is also necessary for us because with out bad experience we can't learnt that what is wrong or what is right. After bad experiences we start getting some maturity.