The world itself it limitless, there are endless things you can learn on a daily basis, do not let yourself get confined to a box. I say this speaking from experience, as I was confined to a box or boundaries on my designs. Now, I have no limits.
I created the below with inspiration from this YouTube video. I took the basic shape from him, just learning more about working with shapes to make the tools work for you, then I expanded his design with different gradients, reflections, and even added in an additional box. Hope you like it, I do.