Feeling dumb because I couldn't understand something

(Chapter 14 Comprehension Problems in my book)

About a month ago, I moved into a new apartment. Today I called the building manager of my apartment to ask if she had a cordless drill for me to borrow so that I could put up my curtain rods. She said that she thought her drill might need to charged, but she would check it out. A few minutes later she knocked on my door. I opened the door and stood in the hallway talking to her. I forgot that I didn't have my key on me and when the door closed it locked me out of my apartment. Luckily, she had a key so we could get back into my apartment.

After we got into my apartment, she showed me how I should turn the dial on the knob and how not to turn it. She told me this several times and even showed me. I told her that I didn't understand so she showed me again. I asked her why that mattered and she said that if I turned it a certain way, I could go to the laundry room or check my mail and my door won't lock me out. I thanked her for telling me this.

Unfortunately, it has now been over an hour since we had that conversation and I have no clue which is the right way to turn the dial. Oh well! I will just have to make sure that I take my key with me whenever I leave my apartment. I guess even fourteen years after my diagnosis of mild cognitive impairment (MCI), my lack of comprehension can still greatly impact my life. Sometimes my lack of comprehension can make me feel so dumb!