Dale, I've just skimmed through a video about Mansfield. I can see why you would want to leave the place.
I expect people will point out that your dream of living in Thailand is difficult and you'll fail. Ignore them! If you have a dream, go for it despite the difficulties. I came to Thailand with a suitcase in 1984 and have been here ever since.
I assume you've thought about how you'll earn an income. To get yourself going financially, you might like to consider ensuring income by using your cash to buy and sell 5 Baht or 10 Baht gold bars. Many Thais do this. I don't know about westerners doing this, though. You probably don't have a pension. You won't need one if you learn about gold. Bank interest is around 1.5%. Gold increases its annual value by around 28%. It's up to you.
I suppose you have gravitated towards living in Bangkok, Pattaya, Chiang Mai, or some city or other. If you have loads of money to burn on rent, fine. If you want to save money, choose a rural town and rent a condominium or house for much less. My family of 4's first accommodation was renting a room in Phuket.
Choose your friends carefully. In my experience, expats can be quite negative and might pull you down. There are always ways to achieve your dream.
I wish you success and a happy life here!