Positive thinking, positive attitudes, and a positive operating system are embedded at some level in the chemistry of your brain.  The same is true for negative thinking, a negative operating system, and depression.

You can modify the chemistry of your brain using medication or illicit drugs.  You can also modify it using cognitive therapy.  Cognitive therapy works because it changes the way you think, and when you change the way you think, you change the chemistry of your brain at some level.

The good news is there are now many medications for mood disorders that can restore your brain chemistry to a more positive state, and your sense of well-being returns.  The medications are not all the same, so if one type of medicine doesn't help, there is a good chance a different one might do the job.

Each family of drugs for mood disorders operates by a different mechanism.  Doctors can't predict which medication will have the most powerful effect in alleviating the negative and distorted thoughts associated with mood disorders.  Some medications require several weeks to have their maximum effect.  Pills aren't magic, but they are powerful if you give them time to work.

Not everyone with a mood disorder needs to take medication to restore a positive outlook.  Medical research has shown that some mood disorders can be treated effectively using only cognitive therapy (counseling) without medication.  This type of therapy teaches you how to recognize and eliminate the twisted and distorted thoughts typically found in mood disorders.

When you struggle with negative thoughts and distorted emotions, you now have multiple treatment options offering real hope.  Depending on the type and severity of your problem, you can use medical therapy or cognitive therapy to start feeling better.  You may even use them in combination to restore the normal chemical balance inside your brain.

Excerpt from :

Zero Tolerance To Negative Thinking : Good-by Depression - Hello Positive Mind

David J Abbott M.D.