Always strive to get better by learning new things. There are many experts in the martial arts. There are few martial artists that will step outside of their comfort zone and try something different. I have been a Tang Soo Do/Tae Kwon Do guy, a Karate guy, a Boxer, a Kickboxer, and a Judo guy. I practice Kendo too. I constantly challenge myself by learning new things. I've worked out with people from various styles (Kung Fu, BJJ, stick fighting, etc.). Always keep an open mind and always be a student.