Multi-select problem: How does the next paragraph end?

How to forget something horrible you saw on the internet
Use thought substitution to overwrite the horrible image.
The idea behind thought substitution (sometimes called thought displacement) is that you have the ability to control what you think and how you react. You can intentionally forget bad memories by filling your mind with more positive things.

Possible answers: a. Your brain has a limited focus, and you can only keep so many thoughts in your immediate sphere of awareness. Try to replace the negative memory by exposing your brain to something brighter. b. For example, if you had a terrible dream last night, try replacing it with a more positive thought such as, " that went well ". Or, you could address it again over and over over. c. If you find yourself just thinking negative thoughts, develop your own thought-reversal technique. Think about all the things that are negative. d. Try not to take things too personally. There is no right or wrong way to forget something bad.
a.