I'm sorry you aren't feeling as strong or prepared as you thought. You are strong.. and you've prepared all you can for this. S and D is a thing that you just have to go straight through to make it to the other side. There's no easy way through and no way to be prepared for the roller coaster it is. Have faith and know that you're strong and have friends and family that will carry you through if they have to. You are not alone and that's important to remember. Do the best you can and trust in God and yourself. You're gonna be OK.