You need to open yourself up to new ideas -- which isn't really all that hard for you. Still, if you don't do it soon, things could get tough, so make sure that you're focusing on the wider world.
Extended: Strangers have the potential to be very inspiring right now -- but you need to interact with them to uncover what they have to offer. Interactions and conversations don't have to be deep to be illuminating, so feel free to say things in passing to people you've never seen before (and may never see again). Do try to get more creative than simply commenting on the weather -- but you may be amazed at the rewards a simple smile can bring today.