Having too much junk where you paint can become a distraction. It can even cause you not to paint. Don't forget, to paint you need very little space and not many materials. I said 'to paint'. To prepare you need more. But having a studio full of empty picture frames, bad paintings, cardboard boxes and things you never use would be better put away in the garage or some other place of storage where you don't see them. Out of sight is out of mind. That applies to art as well.
As for your 'failure' paintings that can't be re-worked, burn them, only if you have the proper facilities to do so. If you can't burn them, gesso or paint over them or cut them up. In oils use paint, then sand if on panel or Masonite. For acrylics use gesso, then sand if not on canvas. You want people to see your best work. Don't put them in the garbage. Someone else will find them.
