Time is a nonrenewable resource, too precious to waste holding a grudge, harboring bitterness, or living in fear. Let the heroes of 9/11, who chose courage, service, and sacrifice when it mattered most, inspire us to live with purpose and a sense of urgency. If there is someone you need to forgive, thank, encourage, or simply reach out to, don’t put it off. If there is a problem you can’t stop thinking about or a calling you know is yours, today is as good a day as any to begin. Life is short, and none of us is promised another opportunity.