Be positive

Writing is generally clearer when it is cast in a positive way (even if it is still a negative thought). So not:

• The wine has not yet arrived.
• I have nowhere to live.
• The cat did not sit on the mat.

Rather

• The wine is delayed.
• I am homeless.
• The cat spurned the mat and sat on the sofa.

Negatives are bad enough. You should never avoid not using double negatives.