Live in the solution not the problem..if you're not happy with your life you're the only one that can change that nobody else..so decide what you want then take the steps to make it happen. Nothing changes over night it's one step at a time takes you one step closer..

You are not. Be patient with yourself.

With your CPA exam or anything you want to accomplish, practice visualization. Find a quiet space, close your eyes, breath deeply. See yourself passing the exam. Let the feeling of a job well done soak into every fiber of your being. How would you celebrate? Who will join you? Will you dance? Smile? Laugh?

You can Google more on visualization.

Bottom line: once you get your mind right, before you sit for the exam, success will follow.

you fail the CPA exam, you try something else, at your age I was homeless and I did pretty well

You are not worthless
I know so many people who is almost 30 even living with parents and if you failing in exam isnt it means you worthless
Just try something else
Also I know someone who struggle alot even feel failing
I do also struggled alot and still living with parents
Dont worry everything will be fine
Just keep trying and find what you want and what you really interested about if you will interested about anything you will keep trying and you will get success

You aren't worthless, you just need to learn how to budget your money.

You are FAR from that. Being able to live at home is a blessing. Do it as long as you can. And keep going.

How are you blowing your money?

You might have to take it a few times.

stop feeling sorry for your self. There are people out here with lives 10 times more shit than yours but we get on with things and make the most of things