Welcome to PC!
I have been through life-long depression. This has had a very negative impact upon my life. I am unable to achieve like I've wanted to do so. I have some support; yet, I often feel I am a burden to those supporting me, especially my husband. I am married to one of the nicest guys on earth. I am lucky in that regard.
With ongoing depressive episodes, I feel very much like I don't deserve any investment on anyone's part, in any way, shape or form.
Treatment-resistant depression warrants extra patience and understanding, for sure. It also takes a lot of strength, courage and self-compassion.
I have made it through the past 40-50 years, simply by taking life one day at a time, sometimes one moment at a time.
If you are interested in ECT, you will find threads discussing ECT throughout the site. I suggest you try a search for the many threads.
Again, welcome to PC!
WC