The root word of realistic is “real.” A goal has to be something that we can reasonably make “real” or a “reality” in our lives. There are some goals that are simply not realistic. You have to be able to say, even if it is a tremendously stretching goal, that yes, indeed, it is entirely realistic—that you could make it. You may even have to say that it will take x, y and z to do it, but if those happen, then it can be done. This is in no way to say it shouldn’t be a big goal, but it must be realistic.