Putting it into practice is a different story. The meltdown usually occurs somewhere between the beginning of the writing workshop and the Betty Ford Center. You might need a little restructuring that will simplify your life and liberate your students. Traditionally, teachers have given the same writing assignment to an entire class. For instance, all children write reports on specific states.
All children write a book report on a famous inventor.
All children give speeches on the importance of democracy. Children are often given the same length of time to write and finish projects, regardless of their limitations or abilities. Think about how you work on projects at home. Some of us are morning people, others aren't human until afternoon. Some days you can hardly face a single chore and other days you surprise yourself by cleaning that dreaded closet and the garage.