Hi Jenton,
Since Citalopram is an SSRI, my first question is, were you clinically depressed or anxious or stressed when the doctor put you on that medication? If not, I have to question the use of it at all. I know such meds are prescribed to Fibro patients but I don't personally think they are appropriate a lot of the time.
It is not surprising that you feel "all over the place" coming off this drug. This is completely normal and it doesn't mean that coming off it was a bad decision. If you want to stay off the drug, then the best thing you can do for yourself is focus hard on improving your overall health in all the ways you can. For one, it will give you something to focus on instead of your feelings of strangeness, and for another better health will help your body deal with the withdrawal symptoms. Remind yourself that this is only withdrawal, and it will pass eventually, and you will be OK.
I recommend that you cut down drastically on all refined sugar in your diet. This means reading all labels and avoiding packaged pre=prepared food, all of which has sugar in it. Eat fresh healthy food and drink a LOT of water every single day. Avoid alcohol. Do your best to keep busy at least half the day with things that you like to do, if possible, and it doesn't matter what that is....visiting a friend, reading, watching a movie, listening to podcasts, doing puzzles, whatever. Get some gentle exercise every day.
And go outside every single day for at least some time, no matter the weather. If there's an activity you enjoy, do it outside, or just take a walk of whatever duration you can. If it is at all possible, get into nature, and I don't mean a city park but actual nature. Soak in the energy of trees, hills, mountains, grass, snow, sky, stars, whatever is out there for you.
All of these things will help. Don't expect instant results, just keep it up and soon you will find yourself feeling things again. You will see a squirrel and laugh at its antics, or you will see a full moon and be filled with its beauty and smile. It will happen, just hang in there.
And keep us informed. We are here to support you and listen and help when we can.