Step 1. It's essential to recognize that your emotions come not from unpleasant situations like someone possibly insulting you, but rather from your own thinking about it.
Consequently, you feel angry not because of the stranger's failure to smile, but rather due to your beliefs—beliefs such as, "He absolutely must not insult me. He's a louse.”
You've made yourself angry; the stranger in the hall did not.
Step 2. At A, B, and C we've diagnosed your problem.
The diagnosis consists of finding the immediate cause of your anger and this lies in your irrational thinking.
Notice that excavating your childhood would have wasted your time and your money.
Since you can change your view, you can change your disturbed emotions.
Step 3. This involves questioning and challenging your irrational Belief at D.
What is the data proving that because you greatly prefer he not insult you, therefore he absolutely must not?
How does his lousy behavior magically turn him into a total louse as a human?
Step 4. Think deeply about these questions.
This segues to E.
When you do, you're likely to come up with more reasonable conclusions: "I can find no data in the real world to prove that what I greatly prefer absolutely must be the case.
Reality is reality, not what I think it must be.
If I feel intimidated, this can't diminish me, my essence, or my personhood.
It doesn't turn me into a weak or worthless person.
I can allow others to conclude whatever they wish about me.
I'll still be the same imperfect human I've always been and function productively and enjoy life.
It's not his treatment of me that caused my feelings of anger; rather it's my irrational 'must' thinking that's my real problem and I can change my thinking."
Step 5. Maxie Maultsby said, "Reinforcement is the royal road to learning."
Ponder, review, and repeat your rational conclusions again and again and again.
The more the better.
As with learning a foreign language, REBT does not offer an overnight cure.
It takes practice, practice, practice.