Without that focus, what happens?
You end up someplace you didn't intend to go. It could be someplace good, or it could be someplace bad. You just never know.
Personally, I like to know where I am going. Thankfully, there is Google maps and GPS systems.
Do you have a GPS for your art career? Do you know where your passion is located?
Finding out where your passion lies can be a big step toward overcoming shyness. Imagine that you are in high school and you have to give a report on the history of cardboard. Yeah, I know, really exciting, isn't it?!? Do you really care about your subject? I mean REALLY care?
If not, then you are probably not going to put the work and effort into giving a great report. If you don't care, then why do the work, right?
Now, turn that around. What if you do care? What if the topic you have to give a report about is something you really love? What if it is something that you have a lot of knowledge about? What if it is something that is really interesting to you?
Don't you want to share your knowledge with other people?
What does that feel like? Think for a moment. Was there ever a time when you felt really excited about some interesting information and you just had to share it with someone else? Did you feel shy or reserved about sharing? I'm guessing probably not. And, even if you felt a little bit of shyness, your excitement probably allowed you to overcome the shyness, right?
So, where does your excitement and passion come from? Once you are able to answer that question, you will be on your way to your True North.