High levels of stress can cause higher degrees of symptoms in mental disorders. Try using some relaxation techniques and time management techniques. Don't worry about going crazy it is not as bad as it seems.
If things don't improve real soon see someone about it. Heck maybe you should see someone even if things get better. It is helpful to have a professional give you advice on how to cope with the past in healthy ways.
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Progress is nothing but the victory of laughter over dogma.--Benjamin De Casseres