The Hardest Decade: Mental Health Between 18 and 25
There is a strange gap in how we treat this age group. At seventeen a young person is a child, with the concern and scaffolding that attracts. At eighteen they are an adult who is presumed to be sorted. Nothing about the actual experience changes at midnight on that birthday, and a great deal of it gets harder.
Everything moves at once
Most life transitions arrive one at a time. This one does not.
School ends, and with it the structure that organised every weekday for thirteen years. The friendship group scatters, some to Melbourne, some into work, some staying put. Study or a job starts, both of which demand self-direction nobody has taught. Money becomes real. Relationships get more serious and end more painfully.
Each of those is manageable alone. Together, over about eighteen months, they represent a wholesale rebuild of a life, undertaken by someone whose brain is still finishing its own construction.
Leaving town, in both directions
In regional Victoria this age carries an extra weight that city kids do not have to carry.
If you leave Ballarat for university in Melbourne, you leave every support you have ever had in a single trip. You arrive somewhere expensive where the friendships are already forming, and homesickness at nineteen is embarrassing enough that most people do not mention it.
If you stay, you watch the group thin out. There is a particular loneliness in being the one who did not go, and a quiet worry that the decision has already been made about the rest of your life.
Both are hard. Neither gets much sympathy, because from outside they look like ordinary choices.
Why this window matters clinically
Most mental health conditions that persist into adulthood first appear before the mid-twenties. Anxiety disorders, depression, eating disorders, bipolar and psychotic illnesses all cluster in adolescence and early adulthood.
This is precisely when treatment is most useful, and precisely when people are least likely to get it. They are out of the paediatric system, off the family health insurance, and often several hours from the GP who has known them since they were small.
What it usually looks like
Rarely a dramatic breakdown. More often a slow slide that is easy to explain away.
Sleep inverting until the day starts in the afternoon. Attendance thinning out, then classes dropped, then the enrolment quietly lapsing. Drinking that has stopped being social. Social withdrawal that gets rationalised as being busy or being broke. And a heavy self-blame, because they believe everyone else is managing.
Everyone else is not managing. They are just also alone in their room at two in the afternoon.
The comparison problem
Every generation has compared itself to its peers. This one does it continuously and against a curated feed. At an age where the central question is genuinely “am I doing this right”, the available evidence is a scroll of other people's best days.
It makes an ordinary developmental uncertainty feel like personal failure.
What helps
Therapy at this age is often shorter and more practical than people expect. A good deal of it is building the scaffolding that school used to provide: sleep, structure, a reason to be somewhere at a particular time. That sounds unglamorous and it does a lot of work.
The rest is usually about untangling what is a genuine mental health problem from what is a hard transition being experienced without much support. Those need different responses, and telling them apart is worth doing early.
For students away from home, telehealth means you can keep seeing the same psychologist through semester, over the summer, and if you move again. Not restarting your story with someone new every time your address changes is worth more than it sounds.
I work with adolescents and young adults, and you can read more about that work here. If you are a parent watching this from a distance and unsure whether to say something, this might be useful.
Send an enquiry whenever you are ready. Young people are welcome to make contact themselves.
Thinking about talking to someone?
If something here landed, that is usually the point at which people start looking. You do not need a referral to make contact, and you do not need to have it all worked out first.
Stacey Black is an AHPRA-registered Clinical Psychologist in Ballarat, with advanced training in DBT, Schema Therapy and evidence-based eating disorder treatment. Sessions run from the Drummond Street rooms or by telehealth across regional Victoria, with a Medicare rebate available on a Mental Health Treatment Plan.
This practice is not a crisis service. If you need help right now, call Lifeline on 13 11 14, or 000 in an emergency.