It sounds as though you have a number of interests in life and that you are keen to start a career.
A real favourite expression of mine comes from the film Patch Adams apparently quoted from Mendelssohn that you should focus on the solution not the problem. I always think about when I am trying to make decisions about my life. If you put too much energy into worrying about the problems and the minor details you will struggle to see clearly enough to focus on the solutions.
It's a real shame that you have given up the passions in life and I would say you really ought to go and spend 30 mins playing guitar or piano. Music for me was a huge release when I was struggling with personal problems growing up. As I got older and had more responsibility I stopped playing as much and didn't realise that I needed it to help release stress. Playing music is also a great way to make friends and is a good way to socialise.
Career wise you have a great variety and choice as you are clearly very articulate and sound able to apply yourself to a number of fields. It is really hard to find the so called "ideal job" it means different things for different people. Just keep persevering and you will find something that you can excel and succeed at. If you start to feel down about yourself you will find it hard to do well in interviews, as people often look at whether they can get on with the applicant over whether they tick all the boxes.
I'm sure if you stay positive it will all come together.
Good luck Estate Agents