This is one of the central questions that our community is working to answer. For my part, I started asking this question when I decided that exercising and eating healthy, while important, is a painfully limited view of what it means to live a healthy life.
Human beings are the most social creatures on planet earth. So, you're not really living a healthy life if it doesn't involve others.
The people you connect with will have a huge influence on you: Those who have already walked through the fire can help you do the same. And those who haven’t will make it seem impossible for you to do so.
I like to think of the way we speak with one another as the "Art of Communication." There are courses taught on this subject, but it seems to be geared towards strengthening public speaking and writing skills, which is great if you're going into public speaking.
Make a conscious effort to bring out the best in someone else through your communication.
This makes communicating less "me-centric," which is talking to hear yourself talk, or talking "at" someone rather than "with" them, or being more interested in wanting to "capture" their attention for some kind of pay off.
To minimize your life is choosing to live by design, not by default. You decide where to allocate your time, focus, and efforts. I read Essentialism months ago. But a quote in the book stayed on my mind: "You cannot overestimate the unimportance of practically everything."― John Maxwell Days passed and I kept pondering this simple sentence.