Realtor, it sounds like you might have some confidence issues.
Here's your starting point: You're not doing as well as you expected.
So now you've got a decision to make: do you keep going, or give up? Only you can make that decision. Many agents have been at the same crossroads.
Without knowing much about you and your specific situation, I would suggest that you keep going. You've got experience and knowledge that you've gained, now you need to utilize it get yourself to the next level. Instead of looking at this situation as a failure, perhaps you could look at it as an opportunity.
You need to determine what you need to change. If you keep doing the same things you'll likely get the exact same results, so your focus should be to: (1) identify what needs to change; and (2) make the change.
It sounds like you could use the help of a sales mentor or sales coach who can give you some guidance and perspective. Do you have someone like that who you can rely upon for help?
What are your thoughts, Realtor?