Only you know your situation, but please don't give up unless you know for sure what hurdles you face. I have a bad habit of stressing out over "what if" and I really work hard on staying grounded. It will help if you can nail down the facts. Hurdles aren't walls. You can overcome hurdles. You don't want to waste all of your very hard work.
I often fall back on the nursing process as a resource. Remember your ADPIE:
Assessment: Stop, take a breath, and assess the situation.
Diagnosing: Make an educated judgment about what is going on.
Plan: What strategies can you use?
Implement: Use those strategies
Evaluate: Is it working? Do you need to try something else?
I actually write stuff out because if I write down, "I'm a big loser" then I can see that isn't helpful and break it down to, "I am too anxious to study" and "I am always tired and emotional" I can work on that.
Becoming a nurse was the hardest thing I had ever done and actually being a nurse, after a few hard first years, is perfectly fine.
It is ironic that nursing school, which required every emotional resource I had, also reduced my access to those resources, like sleep, peace of mind, and down time. I am so glad those days are behind me!