I'd like to elaborate on that idea by relating to you three experiences that led to my development as an artist:
Before I entered kindergarten, my mother encouraged me to draw and learn color theory through what many would consider to be limiting conditions. She wouldn't allow me to use a published coloring book in which you crayon between the lines. Rather, she handed me blank pieces of paper with a set of crayons and encouraged me to create my own designs. Additionally, she placed clear bottles of colored water on the windowsill so that I could layer them to create secondary and tertiary colors. Furthermore, both my father and mother admired my work and instilled in me the self-identity of "artist." So, with limited tangible materials I was able to advance in art beyond most other children my age. I'm not implying that I was the best artist in the neighborhood, but rather that I had a more intense experience with art at that age.
We weren't wealthy, so by the time I entered college as an fine arts major, I had to conserve cash in order to purchase the required materials for classes. I didn't have enough money to buy much, so I made do with what I had. To this day, I believe that this was a great benefit to me. Arriving at creative solutions with so little intensified my ability to find new creative solutions.
As an adult with greater resources, I've learned that purchasing the "latest" art materials and gadgets can lead to confusion. And, that expressing a myriad of ideas in a single painting is also confusing and ridiculously ineffective. So, I've had to impose limits: stick to one concept per painting, reduce the number of hues to help unify the work, question every element in my painting to see if it's even necessary, and so on. The point is to avoid confusion and ineffective painting by setting limits that intensify the quality of my work. Less is more can be a very useful adage!