What is excellence?  It's hustle and sweat and fighting through the pain.  No excuses. It's attention to detail.  It's consistency.  It's hard work without having to be asked. It's more...too many players lack a clear concept of what discipline really is.  It is accepting responsibility for the results you are getting, and dedicating yourself to reality so that you can figure out what is working and what isn't.  This requires stringent 

self-examination, a willingness to be challenged, and relentless honesty.  Then, choosing one course of action over another requires flexibility, good judgement, and courage.