Many times we will be told by other people that we can't do something. It can come from people who know nothing about you, strangers on the street, but, it can also come from people who you respect and love. When this happens, realize that although they are probably just looking out for you, they are really saying you can't do something because either they are looking at the person you are today and judging your capabilities from that or they are saying that because it's not possible for themselves.
You must realize that who you are up until today will have little to do with who you can become a year from today. You can fail your whole life and still turn it all around by next year. As for people saying you can't do something because they can't do it themselves, realize that they aren't you. You determination and will alone will help you overcome the limitations that they were never able to. When that time comes where you have achieved that goal you have set out to get, you will help those around you realize that perhaps it's also possible for them.
Founder of United Nations Reformation Movement