My ego is being a problem

After a few days of mental hell, pain and torture I've come to the conclusion that it's my ego I hate, not me. Physically I'm not the best I know, but I could be worse. But the ego needs sorting. How can I tame/kill my ego without substances? I've tried meditation and breathing work and though it can help boost me mentally I want it to go further and to the point where it's not keeping the same hold over me and where it returns as frequently as it does, if it returns at all. I've had some small success with manifesting but my ego does an amazing job at unpicking any progress I make.

I'm also struggling with detachment but I think that connected to my ego too. Once I've scripted, affirmed, journalese ect my depression kicks in easily and starts to doubt what I've said and done and it feels like I'm fighting a losing battle with myself and I want to overcome it.

Any advice on taming/controlling/killing my ego and detachment would be massively appreciated, thank you.