Your work is wonderful! We all go through self doubt, just don't let it cripple your reaching for the next rung on your artistic journey.
I've been through, and still do, doubt myself and whatever abilities I hope I have...but then...I create something that invokes a reaction from the viewer, touches them in some way...nothing better than that! And I get busy reaching higher.
Your painting is alive with color, but so much more. It is inspiring, as I read it as the rays of light being life, the patterns being the "bumps" in the road. The castle representing, the ever sought sanctity of peace and safety.