Nice Guys tend to live in their heads. They question everything and everyone. Nice Guys are so busy managing the emotions of everyone else that they lose themselves and forget to have fun.
Nice Guys are often miserable. When I work with men who have the Nice Guy Syndrome, I will often ask, "When is the last time you had any fun?" They look back at me with the "deer in the headlights" stare. "When was the last time you went on a vacation?" I will ask. I'll get a reply like, "two years ago, we went and visited my wife's parents in Nebraska." "That doesn't sound like much fun. it doesn't sound like you've done anything in a while." I might reply.
Because Nice Guys are afraid to treat themselves well, they forget what "fun" is, and go on as if their need for fun isn't essential.
Nice Guys tend to get stuck in a rut and spin their wheels. After years of caretaking and pushing their needs aside, the Nice Guy has little fun, and nothing is all that enjoyable.
When was the last time you had any fun? I mean, really fun! When was the last time you felt like you didn't want the moment to end? Breaking free from the Nice Guy Syndrome is doing something different. If you're not having any fun, then you're doing it wrong. So have some fun. You deserve it.