It happens to everyone. Stagnation. A rut. The doldrums. There are a thousand different words for the same concept. You’re doing all the things you used to do, but they just aren’t fun and you don’t feel any improvement.
Today, due to changes in culture, martial arts are practiced for various reasons that extend beyond self-defense and military and law enforcement applications. People train to stay in shape, for competition, for health and longevity, for stress relief and to gain an indomitable “fighting spirit” among many other reasons.