I learned that people should not be judged solely for their annoying qualities.

I can easily be turned off by a person after seeing one, annoying quality about him or her. After witnessing or experiencing the said quality, I usually feel like I don't want to be associated as much with the person anymore. But I realized this attitude towards people is not very healthy. It inhibits friendship from growing. It's important to see what's beyond, not so much as what is right in front of you.