Wanting to be good is not always enough.
I have some friends who want lots of things but cannot stop complaining about the fact that they have to work. Not necessarily that work is bad, just that they actually have to do anything.
I believe that once people hit a certain level of wanting something (be it to be good at context switching for your job, or just good at your job in general), you are willing to work for it, and accept the negatives that come with it (sometimes we deal with unpolite people at work, for example).
Judging by that you took the time to bold the word good (light attempt at some mild humor, sorry), it seems that you are serious about it, and are probably willing to put forth the effort to truly be good (at whatever it is you are refering to).
Putting forth the effort to be good makes the world of a difference, because it will show in what you do, and people will notice.
I like this group on these forums just for the reason that whenever I have a problem, be it technical or supportive (my thread on Lack of Work for instance), you guys are all here to help. It is appreciated, and has made a difference.
I come here because I want to be good at my job, and sometimes I get stuck on something. I have the drive to admit I need help, and some people claim that is a step in the right direction. Whether it is or not, I am not sure, you can decide. It does seem to help though, with you guys helpin out from time to time.
Thank you guys!
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Give a man some fire, he will be warm for a day, Set a man on fire, he will be warm for the rest of his life.