Odd title for a thread, perhaps, but it's apropo, for my development on the bass and other instruments was hampered by my ignorant arrogance. I have had a good ear since my youth. When I delved into popular music in my teens, I really worked on learning instrumental and vocal parts from recordings and became highly proficient at it. Unfortunately, I thought that this alone made me a complete musician. I blew off suggestions from bandmates - and blew off the idea of taking lessons because I reasoned that a teacher couldn't help me. Regarding my bass playing, my technique and execution were relatively weak for years. I'm now 38 and it's only recently that I've been able to honestly assess my skills and have realized my shortcomings (e.g., poor technique), allowing me to address them systematically. And I'm kind of kicking myself for arrogantly refusing to focus on all-around development for so many years. Anyone else have a similar experience?