Don't be didactic - don't write about poverty. Write about poor people. When you dramatize their lives and let life and characters be your inspiration, you will express the 'idea' dynamically and without preaching.
The principle of Creative Limitations calls for freedom within a circle of obstacles and restricted boundaries. Talent is like a muscle: without something to push against, it atrophies. So we deliberately put obstacles in our path - barriers that will inspire us. We disciple ourselves as to what to do, while we're boundless as to how to do it.
