I have seen myself go from being an upstart kid to a balding professional. But I have learned this... age is just a number. I have worked with wonderfully talented “kids” throughout my career. I have also chosen to surround myself with those who are more experienced than me. Both parties have added to my understanding of this medium and its creative applications.
While the guild system of old is all but destroyed, you can still preserve its spirit. Seek out others who you want to work with. Ignore their age and instead look at what they have to offer to the creative process. An open mind goes a long way. I continuously learn things from even the youngest employee or crew member. I also have learned to listen when someone else has something to say.
Video is a collaborative medium and one that has undergone a century worth of change in the last ten years. Bluntly... shut up and listen. Put any preconceived notions you may have about age or experience aside and open yourself to opportunity.