Being a Star Analyst isn't hard.
If you can excel in the top 10 best practices below, you will excel in banking:
1) Be responsive: Reply back within minutes, never more than half a hour, especially during a live process
2) Good attitude: It's late, we're all tired, last thing we need is to see you complain or push back
3) Over-communicate: We know you're multitasking, but so is everyone else. We cannot read your mind
4) Be organized: You can have mold growing on your coffee cup and it's totally cool, but keep your files organized in the drive because other people will rely on it. Yes, color code your fonts, version up your files, etc.
5) Be a team player: If your deal team is still working and you're done, offer help; don't disappear
6) Don't ask stupid questions: Don't ask questions you can find answers to on the internet
7) Be attentive to detail: Extra period? Extra decimal? Extra space? Misspellings?
8) Understand your place in the hierarchy: Never overstep the person above you
9) Have common sense: If you don't have this by now, I can't help you
10) Don't repeat the same mistake twice: People will forgive you the first time, but people will judge you the second time
Banking isn't rocket science, but any banker will tell you that a bad analyst isn't one who can't model--it's the analyst that cannot seem to uphold standard business practices. All the above are transferable to any firm and industry. The only difference is that banking is far less intolerant of failing to meet the above.