No one - not even an Aries - can hold you back!
As a Fire Sign, Leo is filled with lots of powerful energy to get things done in the world. They usually have pretty lofty goals, and are able to achieve many of them.
Your ambition is unparalleled, but you have no doubts about your ability to make it work. If other people can't get behind your dreams, no worries. You can find others who will whole-heartedly support you.
Let's face it... You're not about to be denied what you truly want because of other people's fear. You divested yourself of that a long time ago, and never looked back!