Keep something always in order to use in future is a habit of many.It becomes very difficult to make our mind to give up those things which are no longer useful.
It is easy to say but to implement it is difficult, therefore it is said that something we must follow without satisfy ourself by our decision.Later we will be able to understand it.
So just make the list of those items which are not useful further,leave them forcefully.It will make your life more fruitful.