Many of us who visit LI and are in this legal profession have either taken therapy or planning to take one. I fall in the category of the later seeking help here from the people who have undergone therapy and are doing better now. Please name the therapist who you have found useful (practicing in Delhi) in past or currently undergoing treatment. Practo., etc. are there but would prefer the community-recommended ones.

This is a crowdsourced list of professionals that was going around on the net a while ago. However, not sure if it is up to date and finding a therapist can be quite hard: during the pandemic demand outstripped supply, so good ones may be full up: https://docs.google.com/spreadsheets/d/1pzckT6ns2H1IlmwYwJa8EnBh_1u3gRA9cEOoA4zfilc/edit?usp=drivesdk

You'll probably have to write a bit of a cover letter and 'apply' to ones that seem relevant to you.

So a few of the therapists in the list have moved countries, few are unavailable. I'd looked this up a few months ago. I found an appointment with one from the list but I only got an appointment for 2 months later. Most in the list are good from what I hear. They're mostly holding sessions on WhatsApp video for now but it could make sense to find one in physical proximity so you can continue with the same therapist once (if?) the therapist would rather do this in person.
You'll have to see which therapist works for you, and that takes a few months. Be patient and you'll see it's helpful.
Divya Jain at Fortis Gurgaon is really good but I changed therapists once she was engaged with my firm (which is nice too) (I'd rather not use the services of the firm's therapist).

Typically, between 1000-2000 per session. On the number of sessions, maybe 2-3 sessions. Some people get to know in the first session itself. You should try getting on a quick call with the therapist first, you'll get an idea of how the therapist is. They shouldn't charge for that.