I understand that predicament, but your symptoms do sound like you have primary depression and secondary anxiety given what you described and to resolve this you would need proper treatment. You can try natural supplements of St. Johns Wort and Omega-3, as these two supplements have good anti-depressant and anti-anxiety properties. Also if you want to try to do this on your own, you can try to use Cognitive Behavioral Therapy (CBT) techniques. CBT has a premise that your symptoms are caused by negative thoughts, so if we change your thought process to be more positive and objective, then your symptoms will lessen as well. Here are a few CBT techniques to give you an idea of how it works.
So this link may help you, it contains a technique I use with patients called a thought record. It will help you keep track of any negative thoughts you have. You put the negative thought on paper, the emotion accompanying, the evidence to support it, and the evidence against it. Then I want you to come up with an alternative thought for the situation (more objective and plausible). This will help you change your way of thinking to be able to think more positive and not automatically go to a negative type of thinking.
In addition, these two worksheets are very good at helping to lessen negative type thinking. It can help you focus on the big picture and the objective/positive thoughts and outcomes.
The best CBT minded book you can purchase for less than 10 dollars is called "Feeling Good: The New Mood Therapy" by Burns as this may help you too.
Overall any treatment is going to be a process and you will not have resolution over night, but it could take several months.