As a landscape painter I rarely get blocked. Some artists, and I saw this a lot when I was teaching at the college, get blocked in their work frequently. Not me. Quite to the contrary, there doesn't seem to be enough hours in the day to do all that my active mind envisions! Sure, sometimes when I have the sniffles or just need a day off, the brushes stay in their big ceramic pots waiting. But most of the time very little gets between me and the tubes of paint.
I appreciate my luck in this regard because I see how some of my artist friends struggle with blocks. We're all thrown a road block what with active family lives and the demands of attention and time from those who depend on us. Some excellent artists I know have day jobs in addition to family responsibility and that puts the largest limit on time left for art.
Psychological blocks are the most fascinating to watch play themselves out. I often told student facing blocks that art is a great big mirror into ourselves and that the problems that block our creativity are the same problems that block our lives. Learn to overcome your art block and you have a coping skill that will serve you in life.
Just another reason why art should be taught in schools!