The difference between habit and disorder

Habit

Something done regularly and often automatically, which you can change when you decide to.

Risky use

A pattern that increases the chance of harm — even if harm hasn't happened yet.

Harmful use

Use that is already causing physical, mental, financial, or social harm.

Disorder

A clinical pattern of impaired control and persistence despite harm, usually over months.

• When I set a limit, do I keep it?
• Has this pushed out things or people I care about?
• Do I keep going even when I can see the cost?
• Do I hide it, or feel uneasy when people ask?
• Do I feel I need it to get through ordinary situations?

The WHO's definition of gaming disorder, for example, rests on impaired control and significant impairment of daily life — not on hours played.¹ The same principle applies elsewhere.