Question 092: Ways to improve

I have trained in various MA’s since early childhood but I am now returning to my roots. I dabbled in Kickboxing and other contact fighting in late teens and early twenty’s but as I have aged I’m looking for a more stable and refined art—thus my return to TKD. I’m embarrassed to say that when I was young my ego was what lead my training and NON-success of not attaining my 1st Dan. Now, many years latter, and much regret, the principle of mature discipline is leading my present training and goal setting. Could you recommend ways for me to improve my Taekwondo skills?