hey!
I'm glad you have felt so great after becoming veg.
Happy Science is a group that spreads teachings based mostly on Buddhism. Their main purpose is to create a utopia on earth by teaching people how to be happy and how to make others happy.
They have a website also (happyscience.org.au) and their main base is in Japan.
The founder, Ryuho Okawa, has written over 500 books on various topics explaining how to get through adversities, understand purposes for being here, etc.
Just let me know if you have any questions!
takecare