Hopefully you will understand this from text so you do not have to understand it from first hand experience.
You can seek for emotional support within yourself, in your life, on this board, however trust me, every time you feel better during this two and half year period life will throw a new brick right at your face, and it will not be any different this time either, so buckle up for tomorrow, it wont be pretty, but that is not what i am here to tell you, what i want to tell you is how to make through this in a proper way, with minimal losses and minimal suffering with best outcome.
You are in a situation where you owe child support, can't find a job and couldn't do well in the military. This is giving you distress leading you to wanting to kill yourself.
Now i assume that you have done everything you can do about the situation and it is not getting any better. Since you have done everything you can do about the situation, it is not realistic to do more than you can do. The bottom line is you are distressed because you are not being realistic about the situation.
Instead, in situations like this, ask yourself some questions, first one is that, have you done everything you can about this? If the answer is yes, the next question is Is there anything i can do about this? If the answer is no, then whatever is going on is not your responsibility, and worrying about this is just like worrying about spilled milk, a waste of your own time and energy. However, if there is something you can do about the situation, and you feel that you have not done everything you can. Focus on what is the best way to approach the situation in your opinion, if it is a job and you are not finding one, instead of looking at it as an impossible task, instead make it a routine, send 20 applications a day, and once done you have done today's task towards the issue. Organize the chaos, or the chaos will organize you.