10 Things Depression Makes Us Do

When you think of clinical depression, you probably think of feeling sad and down for long periods of time; losing your energy and your interest in things you used to enjoy; sleeping too much or too little, or eating too much or too little. But besides these, depression can actually change your ability to think. It can impair your attention and memory, as well as your information processing and decision-making skills. It can also lower your cognitive flexibility (the ability to adapt your goals and strategies to changing situations) and executive functioning (the ability to take all the steps to get something done).
https://www.health.harvard.edu/blog/sad-depression-affects-ability-think-201605069551