My definition of fun has evolved over the years.
As a child, fun was playing ball with friends and exploring the nearby woods. In college, fun was associated with social activities with friends and my then-girlfriend (now wife of 45 years).
As an adult, fun became doing things with the kids and at work, “fun” was when I was in a flow state: speaking at events, teaching or helping clients.
Today, I wake up thinking about what would be fun or interesting. While there are some mundane activities, I try to factor in fun every day…even if it’s just relaxing with a good book.
Fun is important, however you define it for yourself. What do you do that fits your definition of fun?