there is only now
3-2-1: On the shortness of life, what mastery requires, and how to overlap the things you love
James Clearjamesclear.com

This principle was underlined for me by a New York City doctor who telephoned to say he had terminal cancer. He said he had been prompted by the NEJM article to try to get the most out of life while he was still mobile and capable of making direct contact with all the things that gave him pleasure.