Hi! I am a self-employed psychotherapist. I understand personal therapy can be considered a deduction. What type of deduction would this be filed under?

It is a medical expense.  To report such an expense in TurboTax online:

 

1. In the Federal section,
2. go to Deductions & Credits
3. scroll down the page to Medical
4. click on the drop down arrow if necessary
5. select Medical Expenses
6. respond to the questions.

@curiousabouttaxes