Non-refundable ticket changes will cost you. As of 2013, Delta charges $150 for changes to domestic tickets and $250 for international tickets. If you booked your Delta flight through a travel agent or an online agency, you will be charged an additional $50 to make any changes to your ticket.
In the U.S., approximately 3.3 million people have OCD, of which you have 0.3 to 1% of pediatric population and 2% of adult population. So about 1 out of 200 adults have OCD and twice as many have had OCD at 1 point or another in their life.
Obsessive-Compulsive Disorder (OCD) People with obsessive-compulsive disorder (OCD) suffer intensely from recurrent unwanted thoughts (obsessions) or rituals (compulsions), which they feel they cannot control. Rituals, such as handwashing, counting, checking or cleaning, are often performed in hope of preventing obsessive thoughts or making them go away.