When our minds wander during meditation, we are encouraged to simply acknowledge the interruption and refocus on the body. When thoughts arise, we label them "just thoughts" or "just thinking" and move our attention back to the next breath--in, out, in, out. Letting go of intrusive thoughts helps mitigate the impact of negative emotions such as anger, anxiety, bitterness and resentment that may have a strangle hold on us.
This, I believe, is a practice writers should embrace. We are accustomed to labeling our own negative thoughts as "voices" we hear. It's an interesting metaphor. We are advised not to pay attention to the voices of negativity that discourage our creative efforts...voices that insist we're wasting our time, that we have no hope of success, that our work is meaningless or inferior. Voices that make us feel guilty for indulging in something we enjoy when others are so hard at work.
The voice of a parent might come back to us...something about taking life seriously, earning a decent living or keeping up appearances. It might a teacher or boss or co-worker, all of them with your best interests in mind as they scatter aspersions and dissuasions and conventional expectations along your path as if your journey weren't difficult enough without them.
Do whatever it takes to stay on the optimistic side. Turn your attention back to the truth:
For more on writing and meditation visit my friend Madhu Wangu, at http://www.madhubazazwangu.com/about-mindful-writing/ .
She's the expert.