So this is for the days that I feel like a crazy person...
You can do this. On the days that you doubt yourself and question the path that you've chosen remember why you chose it. Get yourself another cup of coffee in your favorite mug, step outside and breathe in a nice breath of fresh air (I mean really what better way to calm down than fresh air + coffee?). When you feel overwhelmed and unsure if you can make it through the day, stop what you're doing and go give your husband a big hug. Remember that some days taking mental breaks are more beneficial than plowing through yet another night of endless studying. Remember that you are capable. You are smart. You CAN do this. Keep the end goal in mind. You've got this, girlfriend.
Oh and rest assured, you're not the only one who feels like a crazy person some days ;)