Answer:
The answer is The Prefrontal Cortex
Step-by-step explanation:
The Prefrontal Cortex is a part of The Frontal Cortex at the front of the brain and accounts for more than 10% of our brains. It controlls key functions which involve making decisions and plans, setting long term goals and self control. To see the effects in an example, you can search for the case of Phineas Gage. I hope this answer was helpful.