Having expectations can strain relationships with everyone and everything else around you, leaving a sour taste in your mouth each time. Not everyone likes being disappointed every time. There's positive aspects as well as negative aspects in having expectations, just be realistic about it and meet yourself in the middle.

Does common sense really exist? Isn’t everyone at different levels? Don't settle for being a teacher who can't teach, be one that teaches well. Don’t beat yourself up over your own expectations and don't expect others to read your mind.