No, being happy doesn't mean you don't need therapy anymore anymore than getting one answer correct on a test means you get an "A" :-) You have to answer all/most of the answers correctly. You're just feeling like you're going to do well in the middle of the test. Wait until the test is completely over and graded to worry about whether you need more instruction/testing/"practice"; there could still be questions up ahead that will be difficult and you'll want help with.