Getting into my nerves .. grrrr

Do you find sometimes while you are at home, you lost your patience when talking to your family members? Probably not you but it happens to me. I am trying to study why I am behaving like this. At the same time trying to recall any past experiences that influencing me.

Just last night, my family members told me to take a picture of them, which will be used to develop at a photo studio later. I took the picture with flash, naturally, the eyeball will show some white spot traces of the camera flash. When my relative saw it she didn't like it coz she think I should not use flash. Then we switched off the flash and turned the lights on, but later found the picture was a bit blurry due to night scene setup. A slight shake of hand will affects the picture sharpness. Anyway, we ended with one which was not so bad after more than 10 takes.

When we went to the photo shop, my relative again kept asking why the eye has white spot (with flash). I started losing my cool, I had already explained the theory but she still insist it's not the flash!!! And when the shop keeper told her the same thing then only she quit asking. Then the camera man start lecturing how to handle picture at night as it was a bit blurry. I guess I knew what happened from the beginning from the end, but it ended up the camera shop owner giving us a kind lecture of how to use a camera!! In normal days I would just be agreeable to all these things, but I couldn't agree with whatever I heard that day because, nobody is willing to listen!! Ahh I guess that's they key, when I could not convince my theory to others, I lose my patience. I would search on this further ...