They become a foundation which will determine future decisions. Since there is no formula to follow, the author will arrive at decisions unique for each situation. Here's where selectivity becomes the greatest asset of the author. She can ask for advice from other, more-experienced authors, listen closely to what they have to say, then armed with facts make the choice that's right for her writing career. Beneath the umbrella of selectivity comes professionalism and cost.
Professionalism requires regular work habits and graciousness.
Although the two seem unrelated, they are necessities to professionalism. Writing is a business, so one must treat it as such, producing regularly and researching accurately. Any piece of research that might be questioned needs documenting so as to save time when proof is needed. Keep photocopies and cross-references organized for easy retrieval. Graciousness includes accepting derogatory comments with a smile, yet knowing recallable facts that can turn negatives to positives.