A manual for writers of research papers, theses, and dissertations, 7th edition - Kate L. Turabian 2007

Be open to surprises
Drafting your report
Part I. Research and writing: from planning to production

If you write as you go and plan your best case before you draft, you're unlikely to be utterly surprised by how your draft develops. Even so, be open to new directions from beginning to end:

When your drafting starts to head off on a tangent, go with it for a bit to see whether you're on to something better than you planned.

When reporting your evidence leads you to doubt a reason, don't ignore that feeling. Follow it up.

When the order of your reasons starts to feel awkward, experiment with new ones, even if you thought you were almost done.

Even when you reach your final conclusion, you may see how to restate your claim more clearly and pointedly.

If you get better ideas early enough before your deadline, invest the time to make the changes. It is a cheap price for a big improvement.