There are no mistakes or failures, only lessons.
The most important key to the permanent enhancement of self esteem is the practice of positive inner-talk.
That which you create in beauty and goodness and truth lives on for all time to come. Don't spend your life accumulating material objects that will only turn to dust and ashes.
Winners can tell you where they are going and what they plan to do along the way.
If you're not networking, you're not networking.
The single most outwardly identifiable trait demonstrated by a winning human being is that of positive self-expectation- which is pure and simple optimism.