You shouldn't be worried at all about anything. I had the same problem when it was my time to graduate. I had no idea what I wanted to do, and sort of still don't. I'm halfway through college and still at the "Hmm, I'm not quiet sure what I want to do in life" point. From what I've been told by my father, school registers, and many others it's perfectly normal, and sometimes best, to not have a set plan. As you grow older you'll find more things that interest you and if you are set on one lifestyle you may overlook many others. Take life one day at a time and let it things come to you. Now when I say that don't expect to find it sitting at home on the CPU playing FFXI or anything you need to look but , IMO, life has a funny way of just falling in place..It's very amazing and wonderful. If you are deadset on having to know what it is you want to do look at your hobbys and interest and lock down on one. No matter how far fetched it may seem any human being is capable of doing anything. The things people dream to do , like being a rockstar etc., will never happen to people who say "Man it'd be cool to be a star but I could never do that it's just a dream.." Well, it's only a dream if you let be a dream. If you want it to be reality go work at it, study it, and by God KNOW that it is within you to achieve it and never settle for failure. Joe Dirt said it best when he said, "Gotta keep on keepin on". You can beat life you just have to be patient, willing, and brave.
As for suicide...that is weak. Suicide is an escape for people who have no guts to push threw tough times and no concern for the people they will hurt. If there is only one person in your life that cares about you, you will kill them along with yourself. Your mother loves you and you owe it to her to bring her joy for all I'm sure she has done for you. Just being there and them knowing that you love them makes their day. Suicide is not the answer to anything...whatever life deals you play it, learn from it, and continue on. I had to deal with a friend commiting suicide and his family went from a good family to drugs, depression, hate, and loss of all care for anything. It's never worth it. You owe it to yourself and your loved ones, and I bet there are a few out there you don't even know about :wink: , to finish life out.
As for growing up. The Navy will take care of that no worries haha. give it a week or two and you'll be more a man than you ever thought you could be.
Also, on the subject of a wife and kids etc etc...Why worry with this? Set YOUR life up then worry about this if it's what you want. Get a job and get set and comfortable then consider this. However you never know when you will meet someone special hell, you could meet her tomorrow for all you know! When the time comes for this you will know right then. Love is a powerful thing and also very tricky. Life , again, will deal you this hand when you are ready or not it'll come if you want it to.
Just live life day by day man. Enjoy it, embrace it for it only happens once, most believe anyway, and when it's gone...it's gone. I miss high School but at the same time I'm glad to be moving on in life. I've gone two and a half years through college and last night my plan hit me like a mac truck while playing Guid Wars. However, when it does hit will you have the power to get up and do something about it and make it happen ? I hope so.
Just please, please understand this. It is VERY VERY important to know you can do anything you set your heart to through hard work, sacrifices, and dedication. Anything is possible but YOU have to make it happen.
Good luck buddy and please enjoy your graduation! Go party or whatever, have a blast and enjoy it. The rest of your life will come day by day...so live day by day and keep your eyes open.