Many very successful people have experienced a lot of failure. But they didn't give up.They plan for success as well as failure.
Look back at your goals.
What will you do next if you pass the CAHSEE?What will you do next if you DON'T pass the CAHSEE? How will your goals change?(remember you have up to two years to the test and there are classes available through Oakland Unified School District). If I pass the CAHSEE I will be happy and then pretend it will never existed. If I don't pass the CAHSEE I will study alot better than the last time.
What will you do to have lots of energy and positive attitude next Wednesday when you take your test? I really don't know?