You are still so young don't be so concerned about things that are completely out of control. Things happen but that's just how this life works, you need to be prepared for the worst so you can maneuver efficiently through life with little stress. You don't necessarily need to have your entire life figured out at this exact moment, there's wiggle room. Always.
Life is constantly throwing you for twist and turns you'll never see. You could plan for something and get a totally different outcome which is why you should always have a plan B no matter what. Having one can give you a positive outlook on the future knowing that you have a backup to deter you from failure. And always having options can help too. If you can always have a choice in most matters it could make you feel more in control of your life.
Look more for positives. Easier said than done right? But if you really look at little positives throughout your day, almost automatically you feel better and won't focus your attention on anything unworthy of it.
You may feel down and out of place now but I can promise it will get better. Yes the future can seem pretty cloudy right now and you don't know what to expect but hey that's part of the experience. You need to feel the low valleys in this life to even get to feel the highest peaks. Whatever is plaguing you will cease eventually, you have to give it time and little thought. Positive mind equals a positive life. It may not get better in the next five minutes or days, but it will. You also have to be willing to stand up and actually give it a fight because laying down and taking it will make not a single thing better. You can do this, I know you can. If you give up now what will that do to all of your hopes and dreams? Go with the method that scares you the most because you'll learn so much from the experience. Have faith in yourself. You've been through a lot to be here and you can do it again because you're strong. You got this.
I promise