I personally have known I wanted to be a nurse since I was 5 years old, so no. Even though there were many times where I felt overwhelmed and stressed, I never wanted to change my choice. It is not the type of profession you go into for the glory though, it can be emotional, tough, stressful, and is always a lot of work, but in my opinion totally worth it. I would recommend an internship or volunteer work in a hospital to get a feel for it before you dive in if you don't know a lot about it. You can always change your major or career at any time, but if you choose to, you may have to take different core classes and start from scratch, but nothing is ever completely undoable if you decide it is not for you. I have several friends who changed from nursing to Criminal Justice, psychology, sociology, physical therapy, etc. when they decided it just wasn't what they were looking for. No matter what you ultimately decide, you WILL have moments in any career where you feel overwhelmed, especially during school. Stick it through, make changes if you need to, and do your best. It will fall into place if you work hard and trust your gut!