I took a 13-hour flight to New Zealand from LA. Here are 8 mistakes I made.

I took a 13-hour flight to New Zealand from LA. Here are 8 mistakes I made.

The author in her business-class seat on an Air New Zealand long-haul flight.Monica Humphries/Business Insider Two summers ago, I spent 13 hours on a plane flying from Los Angeles to Auckland, New Zealand. Before, during, and after the flight, I did things that increased exhaustion, jet lag, and discomfort.  Between forgetting my toothbrush and eating sugary snacks, I made mistakes I won't make again. New Zealand is known for its incredibly stun…