I choke myself 20+ times every day and I don't know how to stop.
Why are you choking yourself 20 times a day?
I like the feeling of almost dying.
I am sorry to hear that you are dealing with some intense feelings. It is not good to want to harm yourself. You should seek help so you no longer have to feel this way.
There are some things that can't be solved by going to a therapist. I want to carry on living.
Sure, but therapists can help with lots of things. Self-harm is bad for you, and you've said you can't stop yourself, and I think this is a case where a therapist will be useful.