i wasn't there to hear the conversation with your friend, but I'm going to go against the "advice" given to you in this thread
These are all true statements. Real friends are not ones who blindly encourage you and tell you "you will do great, don't worry!" even though they know it will be a real challenge, and not at all easy or a cakewalk.
I don't choose to surround myself with people who unthinkingly encourage me and tell me what I want to hear. That isn't a good idea and is basically what everyone in this thread is doing, unfortunately. They don't know you, I'm assuming. The people that do know you are apparently telling you to be careful, that this will be difficult. That is good, sound advice.
Now, understand I would never be friends with someone who constantly crapped all over everything I thought and wanted to do. That's different than this. She didn't say you were stupid. She didn't say you 'couldn't do it' and I'm betting neither did your husband. I bet he told you similar things to what your friend told you. That it would be HARD, and difficult.
It is hard, and a LOT of people don't make even make it to the point where they even qualify to apply for the program. Don't kid yourself into thinking otherwise. However, if you really want to be a nurse, it's the only way. You'll feel better about yourself for having gone through the experience, and knowing that you really conquered something tough and difficult, and lived to tell about it.
That's worth more than a lot of empty/meaningless compliments from people who aren't really considering what you've said or are going through, right?
Flame away, but so far in my life, I've found what I'm saying to be true time and time agian.