There's no single answer, and honestly, that's a good thing. Therapy meets you where you are — some seasons of life ask for a few months of work, others ask for something deeper.
Short-term therapy can be highly effective for focused issues: a specific life decision, a particular symptom, a season of change, a discrete goal. Many people meet their goal in 8–20 sessions and leave with clear tools they keep using.
Medium-term work (six months to a year) is common for concerns like anxiety, depression, relationship patterns, or life transitions with multiple layers. There's time to notice patterns, practice new skills in real life, and integrate what you're learning.
Longer-term work is often needed for trauma, attachment patterns, complex grief, chronic conditions, or when you want deeper self-understanding rather than symptom relief alone. Nothing about that timeline means something is wrong with you.
Progress usually isn't linear. Some weeks feel like clear movement; others feel like a slow deepening; occasional weeks feel like backward steps. All of it is part of the work.
Endings are a real part of therapy. A good counselor will talk about ending openly — not push you out, and not keep you longer than you need. You get to decide the ending. That conversation is part of the therapy itself.
It's also normal for people to return to therapy at different life seasons. Coming back isn't failure — it's using a resource wisely at moments when a trusted professional can help.