We tend to regard, with a certain amount of awe, the symphony. And certainly its a great accomplishment to have written one.
What if we thought in a different direction for a moment?
Compose a symphony of very small dimensions. Movements no longer than 30 seconds. Minimum of five movements, no more than ten. You may not use “attaca” between movements. (I’m on to you!)
You may, if you wish, adopt a “cyclic” approach and regard a single theme or motive as developmental fodder across movements.
While writing (and in reflection afterwards) consider this question: without the ability to “ruminate” on material over considerable spans of time, can you still communicate something interesting and worthwhile?
(You may look to Webern for inspiration, but try to say say this in your own “language.”)