If you feel like doing something awesome that will have a great impact on yourself, people around you or even the world, go ahead and do it. Do not wait around for permission from other people. Firstly, you do not have to. Secondly, they might not see or understand what your vision is so they might just put doubt in your head about it. People who have done great things simply just do it. At first, they might face a lot of obstacles and challenges, perhaps from even their closest ones however, if they keep the faith and persevere, the sky is the limit. So stop waiting around for someone to tell you that you may now go work on your dream, you just do it.