For example, in order to get to the moon, the Apollo team did not travel in straight path. Every now and then, the team must make minor corrections in their angle, velocity, yaw, roll etc. in order to stay on the path towards the moon. The destination is the same, one fixed point in space.
In being successful or in aiming for a dream, corrections must be made along the way so that you will stay true to the path that you are traveling on to your dreams.