Just trust myself and go ahead

A article which i had read before states that what we are set in our mind would certainly affect what could we do.A real incident happened in Japan convinced that these statement is definitely true.A lady could even save her child who fell from upstairs window because she ran as fast as lightning until she could get back her child from falling down to the downstairs.These news spread like wildfire and some professional people started to do research about the fact that human can do something which is actually could not be done by somebody before such emergency incident happen.Hence,we can make a conclusion that our ways of thinking totally affect our performance.We should trust in ourself even though sometimes we understand our ability because we don't even know where could we achieved in the future.Although i understand that i am longing for something impossible or something that is very low chance to be happened in my life,i should or in other word,i must do it.If you think you can do it,just go ahead to your target.If i can't achieve my goal in the end,at least i will no have any excuse to regret,do you think so?