Tabby555 I have chronic depression and fatigue and never go out.
This indicates why you have found it even harder to leave. I don't know whether your depression is treated, and if you have Chronic Fatigue Syndrome/ME, but with both these it often seems impossible to make life changing decisions and that it is best to stay put; I understand this as I have both (plus Type 1 diabetes, which complicates things too!).
BUT I do live on my own, and have managed for many years, and it is easier rather than more difficult. It is easy to get in odd job people for physical things you can't do; your energy isn't used up by the nightmare of a relationship; you can choose when to eat, sleep, get up, go out etc. I think once you leave you will realise how energy-sapping his sort of treatment of you is!
There is excellent advice up the thread, especially the advice to plan before leaving the relationship. Think outside the box. Write down all the things he does for you and brainstorm other ways of getting this support, and even if you actually want/need some of them. Sometimes you are made to feel you need something done; question that.
Get legal advice, health advice, counselling, financial advice. Build up your confidence gradually. I don't know for sure, but I think just the process of starting to do this and finding alternatives will boost your self esteem.
Here's brief description of how I do things. My CFS/ME is debilitating, but I am lucky that I can boost myself with coffee, so I can do a few of the fun things I used to do, with recovery time in between. Another lady I know who has ME is able to pace herself to prepare to go out. For depression I take prescribed medication and have done for a long time. I'm not ashamed of taking it; it allows me to live my life (does your partner criticise you if you take medication?). I'm lucky that I own my house outright, and I'm very frugal day-to-day. I have a small garden which I love, and Facebook enables me to keep up with family and friends if I'm not able to go out.
It's not always easy, but whenever I think about it I know that I wouldn't swap it for living with someone even if they were not abusive as your partner is.
A small thing that I've been doing recently to boost my self esteem/mental health and to stop feeling I have to please people all the time (I suspect you are a 'people-pleaser' too!) is to spend about 15 minutes each morning writing down three things I am grateful for, and listening to a guided meditation. It has helped a lot!
Please don't continue to let this man sap your health and energy. Good luck!