You better like it or life is going to be terrible. I point out that's easier said than done, especially if you have family responsibilities. A young person ought to be making that decision early on, before they have the responsibilities of marriage and a family, but even that said, your life is going to be gone unless you face that decision ultimately. There's something magical about putting yourself into life. It's all in our heads.
Life is directed by our thoughts.
We are the stories. We are what we think. My personal philosophy is I'm running a 100-yard dash, and I haven't reached the end. I'll never retire. I've chosen a profession that I can keep doing for a long time.