The steps you have been taking for yourself are great! Keep up the good work.

If you fell neither particularly happy nor particularly sad, I would not take anti-depressant medicine to start with. That probably doesn't do much if you don't have a clear-cut sense of being depressed. If you have never done things you really enjoyed that you no longer enjoy, what is the medicine supposed to help with. Anti-depressant medicine does not change you from depressed to happy; happy is not depressed's opposite; not depressed is depressed's opposite, a kind of baseline. But, it does not sound like you are aware of ever having a baseline, your whole life is a flat, baseline, so medicine probably cannot do much?

Therapy is a great idea I think and I hope the wait time they appear to have in the UK is not too bad for you that it does make you depressed, working hard for something for yourself but having to wait to get it through no fault of your own.

I'd maybe go to the library and find a few interesting-looking self-help books to try to use to, see what you can do on your own. But, there's a free one online that is really good also, Dr. Clay Tucker-Ladd's book, Psychological Self-Help - new - Table of Contents