Beliefs are what condition our minds. We take on these beliefs through the experiences we have in life, mostly early in life. We're not always responsible for our belies, many of them are given to us by other, friends, family, teachers, religious authorities. Beliefs paint a picture in our mind of how the world works. The catch 22 of beliefs is that what we believe is what we attract and experience in our lives, and every time we experience something caused by a belief, we give more power to the belief.
We hold our beliefs sacredly, they're hard to let go of, because they've been imprinted into our minds, for most of our lives. Our beliefs are what hold us back from achieve what we desire and for bringing us closer to what we desire.
The key is to recondition the beliefs that hold you back (Limiting Beliefs) form your desires, to beliefs that move you towards your desires (Empowering Beliefs).