Even obstacles have limitations, if you know what they are and how to recognize them, no situation will be impossible for you to overcome.
When you find yourself coming up against adversity you have two options, you can give up or you can choose to rise to the occasion and figure out how to overcome the obstacles you face.
There are two key factors in overcoming any obstacle or barrier you face, the first is knowing that every adversary can be overcome and the second is knowing your mission and believing you can.