I think anyone who's attempted to quit has felt the same way as you are feeling right now. Unsure at times if we could actually do it or not.
The answer to that lies within you and you alone. The question is always the same; do you want to quit more than you want to smoke? You have a couple weeks invested in your quit now. Two of the toughest weeks you'll go through. Wouldn't it be a shame to waste those by throwing in the towel at this point? The more time you invest in quitting, the more reason there is to continue on with it because of that emotional investment.
You don't know what's going on with you because your whole daily life as a smoker has been turned upside down by quitting. Smoking was tied to everything you did day to day so of course you feel lost now; anxious, angry and just plain uncomfortable. You're going through the process of learning to live your life without cigarettes at every turn. Doesn't it make sense to continue with that now that you've started the process? That's how you solidify your own quit by continuing to go through your daily routine without smoking. After awhile, that will become your normal state of being and you'll even wonder why oh why you ever smoked in the first place because it will seem so un-natural to you.
The only way to get to that point is to carry on doing whay you're doing right now. All the quit symptoms you are feeling right now will slowly fade away as you become more and more established as a non-smoker. That process IS the same for all of us and that's why people are often moved to say; "If I can quit, anyone can!" The only reason any person would have to say that can't quit is if they choose not to. The ability to quit is within all of us unless we consciously choose not to.
You've done much of the heavy lifting already in these first couple of weeks. Make that count for something and carry on!