When do we actually fail?

I feel I have failed many a times in life.. but when I look back, the failure that I felt is no more residing in my memory, it has all cultivated in a better me than yesterday.

When we go to work, many things don’t happen the way we planned or we expected it to happen, same goes in our relationships…So does it mean we have failed?

Just two thoughts to provoke:

As I go back the memory lane (5-10years & beyond), I realize that the incidences of failure that I wandered upon for months, now if I could go back to my younger me, I would just smile and think why didn’t I understood this at that point of time and today its not even there, as a feeling of failure.

It revolves around, as a feeling of sadness, a long sigh of immaturity or a sigh of relief thank god I failed…