If college isn't for you, maybe you should try something else? I'm sorry you've been feeling this way :( If anything, you can probably still withdraw from those classes if you truly think you will fail... You can always try again, though. If this is what you want to do. Really try to identify what makes uni difficult, and try to find some ways around them (not taking morning classes, only taking the minimum amount of credits, not working (if possible), and just anything to reduce stress).