Reasons why most people may not get enough sleep

 One thing that psychology emphasises is that sleep is a biological need, not a luxury. We can choose to skip a meal for a while or stay busy, but eventually our bodies need sleep to function properly.

At the same time, as you said, life doesn't always make it easy to get the sleep we need.

There are many reasons why people don't get enough sleep, for example:

• Neurodevelopmental conditions such as autism and ADHD.
• Mental health conditions such as anxiety, depression, or PTSD.
• Physical health conditions such as chronic pain, breathing problems, or restless legs syndrome.
• Parenting, especially with young children.
• Shift work or working nights.
• Stress about work, money, or family.
• Noise, light, or an uncomfortable sleeping environment.
• Technology, such as using phones, tablets, or computers late at night.

For some people, improving sleep might be as simple as changing a bedtime routine. For others, especially those with medical or neurodevelopmental conditions, it may require professional support or a combination of strategies.

I also like something you said earlier:

"You still are, but you learn to manage it better."

That applies here too. Many autistic adults or adults with ADHD don't suddenly become "good sleepers." Instead, they often learn what works for them.

For example, someone might discover they sleep better if they:

• Keep the same bedtime every night.
• Reduce bright lights before bed.
• Use blackout curtains.
• Wear earplugs or use white noise.
• Sleep under a weighted blanket if it helps them feel comfortable (though it's not right for everyone).
• Avoid caffeine later in the day.
• Read or listen to calming music before sleep.

These strategies don't "cure" sleep difficulties, but they can help some people manage them more effectively.

A point worth including in your book

I think this would fit well:

Sleep is essential for everyone, but not everyone finds sleep easy.

Some people fall asleep quickly and wake feeling refreshed.

Others may take a long time to fall asleep, wake several times during the night, or never feel fully rested.

This does not mean they are lazy or unwilling to sleep. Many factors can affect sleep, including neurodevelopmental conditions, mental health, physical health, medications, stress, and the environment.

Understanding these differences helps us support people with kindness rather than making assumptions.

I think that's one of the biggest changes over the last few decades. In the past, people often judged someone by what they could see—"they won't go to bed" or "they're always tired." Today, we recognise that sleep is influenced by biology, psychology, and environment, and that everyone's brain and body work a little differently. That understanding has led to much more compassionate and effective support for people who experience sleep difficulties.