The greatest barrier to ...

The greatest barrier to achievement and success is not lack of talent or ability but rather the feeling that achievement and success, above a certain level, are outside our self-concept-our image of who we are and what is appropriate to us.
 Nathaniel Branden

Quotes from the same author

The real basic power of an individual isn't what he or she knows; it's the ability to think and learn and face new challenges.
 Nathaniel Branden
To accept struggle as part of life, to accept all of it, even the darkest moments of anguish; to be motivated by love rather than fear, by confidence rather than insecurity: these are the benchmarks of high self-esteem. The wish to avoid fear and pain is not the motive that drives the lives of highly evolved men and women; rather, it is the life force within them, thrusting toward its unique form of expression-the actualization of personal values.
 Nathaniel Branden
How do we keep our inner fire alive? Two things, at minimum, are needed: an ability to appreciate the positives in our life – and a commitment to action. Every day, it's important to ask and answer these questions: ‘What's good in my life?’ and ‘What needs to be done?
 Nathaniel Branden
There is no value-judgment more important to a man--no factor more decisive in his psychological development and motivation--than the estimate he passes on himself.
 Nathaniel Branden
To live consciously means to seek to be aware of everything that bears on our actions, purposes, values, and goals—to the best of our ability, whatever that ability may be—and to behave in accordance with that which we see and know.
 Nathaniel Branden