If we don't love it, we won't do it.
Do perfectly all that you can do now. The doing to perfection of one thing invariable provides us with the equipment for doing the next larger thing, because it is a principle inherent in Nature that life continually advances. Every person who does one thing perfectly is instantly presented with an opportunity to begin doing the next larger thing.
Doing big things begins with asking for them properly. So we need to ask the right question. It's not "What do we want?", it's "What excites us?" "What brings us to life?"