One of the reasons we do not face our goals is because when we are faced with an unexpected barrier that we're unsure how to deal with, we shut down. We become discouraged, we start making excuses, and we allow ourselves to back off of our original plan. While this is a human and natural tendency, it's not conducive to success.
An important step that you can take to avoid this barrier blunder is that of carefully planning your goal to include backup plans for all those little "what ifs."
"What if I don't pass the prerequisite course?"
"What if I don't get the loan?"
"What if I run out of time?"
"What if the marketing doesn't work?"
"What if I just don't feel like it?"
These are all very real barriers that keep us from realizing our life dreams. By preplanning for them, we greatly improve our chances of succeeding and experience the power of being unstoppable.