How often do you start an art project with no real end goal in mind?
Recently, I've been a little too occupied with the "why" of my art. Before I delve into a new project, I ask "will this make me money?", or "can this be a good portfolio piece?", or maybe even "could I give this as a gift?". More often than not, if I don't have a clear reason for creating something, I won't even bother to start.
That's not a healthy attitude.
If you stop creating those random pieces, you stop doing art for yourself. A major benefit of art is that it is therapeutic, but you lose that benefit as soon as you introduce the possibility of failure. If you have created a goal in mind, then you have also created the possibility of failure.
There is no shame in making something that you can't use for money or approval... because, in the end, you've made it for yourself. So that's what I've been working on lately- creating for no reason. And you know, I've been feeling more creative (and lucrative). Go figure!
My suggestion for you- go do an art project that you will never show another person.