Does money make you happy or should I teach?

I've had a headache of morality, living in London is expensive but I would like to be a teacher. I've been accepted to do this teaching course PGCE in maths. I will be living on a bursary, which isn’t that much to get by for a whole year. I have nothing; no money my parents are not wealthy, I have lived in a council house all my life. So I'm like will this be a rewarding career if I'm not going to not be wealthy. I think I’ll enjoy teaching and the life style, helping people puts a simile on my face. But then I think if I was wealthy would I love to become a teacher and the answer is probably no…. I’ll rather have a business or manage a restaurant.