Dreams are what make you different... outside the status quo of the non-dreaming sheeple.
It's ok to "give up" a dream when it no longer meets your needs. And sometimes (often!) we deal with setbacks and moments where you don't think you can overcome the obstacles. A break can help. Perspective is EVERYTHING. (You're an artist, right?)
I've been successful reaching some, but not all of my dreams. What's important is you realize this is part of it, too. If you could easily accomplish all your dreams, then life would be BORING. (I think that's a big part about why we're here in the physicality.)
The one thing I do know, I've never been happier than I am going after my dreams. Even with the bad times. The total balance is far far better than the alternative, which is trashing the whole idea that dreaming is possible.
During your break, or "perspective" time, make sure to check the other aspects of your life (both personal and interpersonal) that might have gotten neglected. Sometimes we get too wrapped up in our dreams that the here-and-now gets a bit tweaked, and we have to fix those things so that dream chasing work.
It might sound silly, but try reading some inspirational quotes (just google it, or stop by the library or bookstore and flip through some pages). It really can make a difference and help with your outlook.
"Our truest life is when we are in dreams awake." - Henry David Thoreau
Here is a link:
http://www.inspirational-quotes.info/dreams.html
PS One more thing... make sure you are physically "ok" Seriously, you are in your late 30s or so? Me too. Simple things like hormone levels change as we age and this affects our perception in strange ways. This can affect men beginning in their 30s. Make a "wellness" visit to a doctor! PM me for further discussion if necessary.