The British No6, who turned professional in 2005, has slipped down to 312 in the world rankings and failed to qualify for this year’s Wimbledon.
“This year was always going to be a big year for me and I knew around this time I’d have to make some decisions,” Goodall told BBC Radio Berkshire.
“I’ve had to come to a decision about which direction to go in and sadly it looks like it’s coming to an end.”
Goodall, whose highest British ranking was number two in 2012, feels that the prize money system in tennis needs addressing.
“The thing with tennis is that the bulk of the prize money goes to the top 100 and my best ranking is 184,” Goodall added.
“It makes it very difficult for players – it’s almost impossible. In my opinion things need to change.
“The level I’ve been playing at isn’t paying enough and to make it to the top you need to be earning a lot more.”