Doing a backflip will draw attention from everyone around you. People will watch your feat, wishing they were able to perform such a stunt.
The main obstacle for performing a backflip is not physical. Anyone with an average amount of athletic ability is physically able of performing a backflip. Fear is the only obstacle.
People are mentally unprepared and unable to take the risk and attempt such a feat. To learn how to do backflips, a person must be prepared to fail. Once the risk is taken, a backflip can be learned in a relatively short period of time.
Like backflips, people are physically capable of achieving great things, the only thing holding them back is a mindset of fear.