One of my favourite quotes by "the master" Carl Jung. I try to remind myself of this simple yet profound message every time I find myself irritated, angry and annoyed. This has allowed me to lead my practice of self-reflection to a deeper level, without which, I would have remained just irritated, but with which, I have been able to learn and imbibe within me new messages. Self-Reflection is an extremely important skill and a must-have too for self-development.
To read more about how you can build a practice of Self-Reflection read my post "Self-Reflection: A must have skill".