TFA and its sister WFG make a compelling business to work for. You can start part time, work at your own pace, and eventually make it whatever you want it to be. There are many people making a lot of money who have been in it for a while, and there are others just starting and using it for a few extra dollars.
Keep in mind there are fees for licenses - more ... and insurance so it is possible to get ahead of yourself if you haven't brought in the business to support it yet.
It is 100% commission and residual income, so you have to keep at it. The culture of the company is to always try and do more ... - less