I've never had a therapist so I don't know much about that.

I do know that for many years I could not face facts, not admit the truth I ran away from it.
Then one day I remember it was my 40th birthday, my best friend rang to wish me happy birthday, she said ;

'This ain't no dummy run mate, this is the real thing'

That day was the day I decided I couldn't carry on like this any more and started a 'self help' course of therapy as I had no money. Read books, researched on the internet.
What was wrong with me, why was I so faulty?

I don't know if this is usual with therapy but I found that at first I felt much worse rather than better, as painful memories and realizations came to the surface.

I had to stop for a while as it was all too much.

Then I started again, with extra determination to change things.
And now, I feel much better many demons have been exorcized. I am in control now.

I have learnt much.
I learnt that my mother was a malignant narcissist (she ticks the boxes) this knowledge enabled me to forgive myself, to let go of shame and guilt. I now know that I was not faulty, she was.

Now I am (almost) normal, I do have the odd bad day still and I take an SSRI which helps me .

So I think therapy is a real good idea, it is very important to find the right therapist, one that 'gets you' if one don't fit, get a different one. The earlier you start the better IMO.
Be brave