Purgatory and DU have both written some awesome posts about getting by, 111. You'd do well to follow them. It's quite normal to feel this low in the beginning. Allow these periods to unfold. They will be frequent, but they will eventually pass.
You might also do well to look into the cognitive side of psychology -- essentially, that what we think shapes the world outside of us. Your last couple of posts were filled with all sorts of negative assumptions. You may feel very strongly that all of those things are true, but it's helpful to realize that little in life has any inherent meaning other than what we give it. So if you are prone to think negatively about the world, your world will be negative!
Think of your thoughts and feelings as being "theories" or "ideas." They might be true. Then again, they might not be. Once you learn to question the validity of your patterns of thought, you might realize that things are not quite as black-and-white as you may have previously assumed.
You will get through this. No matter what happens.
