@businessinsiderssa: In her iconic 2011 Harvard commencement speech, Ellen Johnson Sirleaf- Africa’s first female president, reminded the world that the only dreams worth chasing are the ones that feel impossible at the start.” If you aren’t a little bit scared of your next step, you’re probably not thinking big enough. True growth rarely happens in the comfort zone, if your vision feels “manageable,” it may be time to scale it up.