There are no mistakes in life, only lessons. There is no such thing as a negative experience, only opportunities to grow, learn and advance along the road of self-mastery. From struggle comes strength. Even pain can be a wonderful teacher.
No matter what happens to you in your life, you alone have the capacity to choose your response to it.
Your I can is more important than your IQ.
Don't pick up the phone every time it rings. It is there for your convenience, not the convenience of others.