In my experience, education is a vocation. You have it or you don't, but liking children is not enough. I do like children, and miserably failed to cope with the admin demands of teaching combined with a lack of intellectual stimulation in general...
I don't think we can tell you what to do but my advice for education is ... try it out! Go for a placement in a school, make it as long as you can. Odds are you'll either love it or loathe it - so you'll know if it's your calling or if you can rule it out and narrow your options down to real estate and finance. If you're in the UK you'll need a CRB check but once you have that, it's easy enough to get a placement somewhere.
I don't know much about the finance world but I suppose you could easily do the same actually - long placement, to see if it's your thing. For real estate I guess it depends on what job you have in mind exactly?