You are allowed to get tired. That is okay. Then rest for a while to regain lost strength.
You are allowed to get frustrated whilst trying. That is still okay. Then recalibrate and get back at it.
You are allowed to feel confused. That is okay. Then take some time out to figure something out.
You are indeed allowed to feel nervous. That is a human thing. Then calm yourself down for a while before you carry on again.
But guess what? You are NOT allowed to give up!
Try your best possible not to give up because you have come too far to give up now, especially when you are now so close to achieving that goal.
PLEASE, DO NOT GIVE UP BROTHERLY!
PLEASE, DO NOT GIVE UP SISTERLY!