My paternal grandfather died at age 44 of either a massive heart attack or poisoning while serving as a diplomat in Turkey after World War 2. He was an economist and also the author of a dime store detective novel.
He gave my father a piece of advice that has been passed down now for multiple generations, “If you want to get the work done, you must sit your butt in the chair and do the work. Every day.”
It’s good advice to all of us starting new businesses or trying to grow our existing ones.