put it down to experience
Okay, so you made a mistake - you just have to put it down to experience and carry on with your life.
There's nothing we can do about it now, we'll just have to put it down to experience.
(Definition of “put it down to experience” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Word of the Day
an area, often covered with sand or rocks, where there is very little rain and not many plants