Insomnia can be a common side effect of a holiday season in high gear. Although we go to bed dog tired from all the extra planning, shopping, wrapping, imbibing and eating, it's hard to get the mind to rest. Did I buy a gift for Auntie Malia? When is the mailing date for the Mainland packages? Do I have a platter big enough for a 20-pound turkey?

We know that adequate sleep is necessary for us to feel good and function properly. So how can we improve our chances of getting a good night's sleep?

We spoke with Dr. Gabriele Barthlen, a neurologist and director of Sleep Center Hawai'i with locations in Pearl City, Downtown Honolulu, Hilo and Kailua, Kona. Barthlen said that of the 80-plus different types of sleep disorders, some studies estimate that 30 percent to 50 percent of the population suffers from situational insomnia — caused by stressful or emotional scenarios, such as the faltering economy, depression or even the pressure and excitement of preparing for holiday parties.

At Sleep Center Hawai'i, the number of patients with sleep disorders has increased in connection with "economic stresses," Barthlen said.

People with situational insomnia can generally get adequate sleep by setting regular bed times and regular wake times — the two most important factors, Barthlen said.

She also recommends these three strategies:

1. Maintain good sleep habits.

2. Keep a sleep log to determine patterns.

3. Try relaxation therapy, such as biofeedback, meditation, yoga and self-hypnosis.

For those who get to sleep without a problem, but wake up before they have had adequate sleep, Barthlen recommends: "When in bed awake for more than 15 minutes, get up and do something relaxing or boring, not computer work. When sleepy again, go back to bed."

While many of us understand the necessity for exercise and good nutrition, we often overlook the importance of good sleep to our overall health. For those with more serious sleep problems, it's best to check with a physician.