The problem with self assigned "street" work is not just the lack of an editor, or a third party to critique, it's the lack of purpose.
Since photojournalism is almost dead in regards to still photography, we've lost those human interest stories, where an editor assigns a shoot by saying "there is a young black preacher in Alabama tonight speaking on civil rights, go cover it".
That's how iconic images were made, but today if a Martin Luther King reappears and if he's unknown he'll be covered by mobile phones, which will probably be awful imagery, or once he gets famous, the photographer will be restricted by mangers, PR groups and have to stand with the rest of the pool in one spot.
I may be wrong, but i think people are actually interested in well written and illustrated news stories, but the media got lazy and greedy way before the internet, turning celebrity PR into news, making every cover a massaged portrait or pseudo fashion image on white of anyone that is popular for the moment.
But in regards to shooting the street, I know one person that does it very well, but his best work comes from planning and hard work.
He also isn't doing the facebook, instigram thing where he inserts himself, his dog or his girlfriend into every photo, he goes out with a plan to come back with something unique to the moment and is up early to late.
It's very hard to do, few do it well, most do it the easy way. While on vacation in Rome, They shoot that woman making bread. Got it,. Now they see a guy on a bicycle on a cobblestone street. Got it.
When I started in photography, I was driving from location to location on the gulf coast. It was a blue foggy morning and I saw a man jogging. I swung the car around, got ahead of him and as he appeared started to shoot, but immediately in my head I knew I'd seen this same photograph 12 billion times before, so I just tossed the roll of film got back in the car and drove on.
Sometimes what you don't shoot is as important as what you do.
If you love street work I strongly suggest getting a press card and calling some publication for spec work. Ask them what would they love to do if they were allowed. Some of it might be beyond reach, but I'll bet someone will have a good idea or know something they need. In a way I hate suggesting it, because I guess I'm advocating working for free, (and I don't think free and work belong in the same sentence), but if it's personal and you want to excel, having that kind of directive and the fact that you can say your shooting for the _____________ might get you more in the end.