Our experiences seem similar so if we're the same age---I've wrestled with this question a considerable amount of time and what seems to work for me is to find

Our experiences seem similar so if we're the same age---I've wrestled with this question a considerable amount of time and what seems to work for me is to find a way to broaden my life experience, so that I can find a new thrilling problem to solve. Break out of your isolation if you've been in a bubble, and try out a totally different business domain (without establishing a reputation as a brash idiot), make new friends who matter to you so that their (business) problems or causes matter to you. In any case, you won't find that ambition by keeping things the same. Oh and manage your expectations. You might no longer have the wild burning distracted passion as you did when you were younger, but you might have the measured, genuine curiosity of an experienced adult, and you should own that.