Individual therapy is the most searched-for and least understood format. It isn't reserved for people "in crisis". Most patients arrive functional from the outside — they go to work, have relationships, pay the bills — and exhausted on the inside.
The reasons that bring people most often: anxiety that no longer lets up, a mood that has been flat for months, professional burnout, a breakup, a loss, a decision the next decade depends on. Sometimes the reason is vaguer — "I don't recognise myself" — and it is just as valid.
You don't need a diagnosis to start. You need an hour a week and a willingness to be honest in a space where you don't have to protect anyone's feelings.