Graduating high school can really be scary. I once had a teacher who told me that the time of his life where he was most scared of when he was graduating from high school. In high school, you get into a route. You get up at a certain time, go to school, go to classes, come home, and do the same thing the next day. Once you graduate from high school that route is completely gone and its time to make a living. That is absolutely scary and horrifying for something who has no idea what they are going to do after graduation. A lot of people know that they are going to college or the military, and all those plans are in place so there is no mystery. Therefore, they may not understand your feelings.
You said you that graduate in October, my suggestion is to get with your school's counselor and explain to him or her that you don't know what you are going to do after high school and you need to be guided in the right direction. The options are usually college, military, trade school, or work. If you have decided to go to the military, you need to ensure that everything is in place so that you can go. By the way, don't take for granted the possibility of a military school which will give you the opportunity to enter the military as an officer. However, if your choice is the military, you need to talk to your counselor about it. Talk to her about your prospects in a military school vs what you need to do to enlist right out of high school.
There are usually military recruiters at schools. One thing you need to keep in mind is that the military recruiter is paid a lot of money just to get you to enlist. So don't think that recruiter is being so nice because he or she likes you. Ask them questions and make it clear that you know the game they are playing, and you want accurate information rather then sensationalism and exaggerated benefits. I know how they operate because I considered joining the military and the recruiter was almost like a stalker. I later found that he would be paid thousands of dollars if he recruited be successfully. I scored really high on some military test called ASVAB, but I didn't know it was a direct entry test. I thought it was for military school. I eventually gave up on military school because no one provided the information and I didn't stay on the back of my counselor so I just decided to enroll in a 4 year college.
So make sure that you explore every and all options. Look at the possibility of you enrolling in a college, financial aid will probably cover the cost of tuition and books if you go to a state college and you have a financial need. If you can pick up a job in college, you may be able to get an apartment of your own. Also look at the possibility of the military, both direct enlistment and military schools. If you plan on direct enrollment, talk to your counselor about taking the ASVAB or talk to your local military recruiter about it. The ASVAB is pretty much a basic test that determine what positions in the military you can choose from...like basic infantry or communications etc. Make sure you research the test. When I took the test, I did well in the academic part which was basic math (a look harder than basic), reading, and science. That was 1/2 of the test, however, the other half was technical stuff like mechanics. So I found myself look at a engine and not knowing that it was an engine (lol). However, I still came out with a great score by using common sense on the mechanical part and picking names based on how something looked. The test doesn't discriminate on the academic and technical areas. I believe they are all worth the same or similar. So even if you are bad at math, reading, and science, if you are good at mechanical and technical stuff, you will score well above the requirement. The ASVAB and a physical is all I believe that you really need to enlist.
As for enrolling in a military school, I have no idea. However, I was contacted by a military school last week, but I told them it was too late as I was already enrolled in a college. Its unfortunately that they didn't contact me until I graduated for high school

. So if you know where you are going, you won't have a reason to seek failure. I know it disorganized and you're probably very confused and stressed. However, really really really take these words to heart...we always exaggerate how hard something is. If you tell you counselor that you want to go to the military and tell him or her to make it happen, they will assist you in doing that. The primary thing you should be doing is making sure you have set plans so that you won't have to be so stressed.
Also, there is nothing wrong with being a little jealous of your friend, we are all jealous of someone, we just have to recognize that jealousy

. I hope that you stay here at Knowledgesutra, its a good place to get support in our times of need you know