Managing a Creative Environment.
You should be able to tell apart certain professions. For example, if you take an office worker and an illustrator, their workspace should be very different from one another's. 
Artist's collect things, bits of inspiration. It is a great way to incorporate subject into your work. You are excited by your collections, they inspire you. Before you no it, you have a stack of findings. Put these up on your wall, on your notice board. Put your art work up. The more creative your work space is, you are more likely to do more work and it will be of a better standard. I'm not saying if you put up a few pretty pictures and say abra cadabra then your work will turn into something worth millions, doesn't work like that, but you will be driven and excited about being in a studio that is filled with visual ideas and reference that you will want to work and you will want to produce something amazing.

Here is someone's work space. It isn't too messy stopping him working but there is a lot of material in there. If he is stuck on an idea, he could look around his room at his work and other work he has collected and get inspiration and maybe help him spring up a new idea. Your work will be reflected on what it looks like, so it should reflect off you as a person meaning your work space should reflect the same feel as well. You will feel good when you are in your studio, its your own little world where you can get away from it all.
I have my own personal studio. It is how I want it and I get inspiration from it. I don't like to fill my space up with everything I own. I consider myself as a minimalist. Less is more. This is my analogy and I stick to it in my work. This doesn't mean I don'y collect things and have as much things as others, I just store my material differently. I like to have a clear head and I like to have a clear space, if my place is cluttered, me head gets cluttered and I find it hard to think. People work in different ways and its important this happens. If everyone worked in the same way, all the ideas would just be getting used all the time and nothing new and exciting would be happening. So keep your style. Be proud of your studio. Be excited to put that photo up on your wall.