success and failure

how do you define success and  failures. how do you differentiate between them. How do you know that a certain evebt that occures is a success or a failure. People say that it is very important to fail in order to succeed. Really?.. Is it? in order to succeed it is important to only succeed. Success is what is remembered and not failure by the world, but failure is remembered and not success by the person who is being remebered. Wel i guess thats the difference between a successful man and a failed man or in liberal terms , nota successful man. But still how do you differentatie between failures and successes.
Well i am not sure that what we think as failure is a faiilure or is it actually a success. maybe failure. but i personally think that it is the failures that have redefined me and made me realise that i need to keep on toiling hard in order to prove something not to the world but to yourself. Everytime i look back, all i remember are the failures.. kidding.. i do remember the successes in life but tey havent made me the person i am today,, they have only added feathers to the cap and may be made the cap. But it is acrtually the failures which have been a source of motivation and ignited a zeal to prove to myself that i can be better than that. failure for me is the catual success coz it is failure that makes you value successs.