Whether you're just starting out in business or vying for a promotion, these simple guidelines will never fail you.

Turn off your gadgets in meetings.

Having the discipline to step away from distractions is refreshing. Of course, this really only works if everyone adheres to it. It's difficult to make that happen, but when everyone is unplugged and focused, meetings are much more productive.

Arrive on time for meetings face to face or virtual.

If you're the meeting host, on time means at least five minutes early.

If you're the guest, on time means on time. It's crazy how often people on both sides of the invitation are late and say nothing about it.

If you get held up and know you're going to be delayed, a quick email can keep the person on the other end from feeling stood up.

No nail trimming at work.

When should trimming nails at work happen? It should happen never. While it should be obvious, this also goes for large group meetings as well.

Express gratitude.

Thank you notes go a long way. If possible, a handwritten note is best.

Target has some lovely, affordable boxed sets. If you take the time to follow up, it will get noticed. It will also get noticed if it's poorly executed. Also, if you prefer a paperless option, make sure your message is concise, thoughtful, and free of misspelled words.

Whether it's a company-wide function or a team dinner, ask before inviting your significant other.

Ask the host/coordinator of the event. If it's not been offered to everyone, it's inconsiderate to assume that the company wants to pay for your spouse.

Secondly, if you bring your significant other and nobody else does, talking shop feels awkward to everyone (your guest included), and that's what business dinners are often about.

As a general policy, if spouses/significant others are openly invited, absolutely go for it. If it's not a group-wide invitation, fly solo.

Don't say anything in email or instant messaging that you don't mind being broadcast to your entire organization.

Watch what you're saying on instant messaging systems. Likely, there are chat logs of what you're chatting about that are archived somewhere.

Don't dominate the "Questions" segment in meetings.

How many questions should you ask? Frankly, I think one question per big meeting is usually enough; three is the maximum.

For smaller meetings, just consider how much air time is available, and try not to dominate. Also, consider if the question has the word "I" in it. Who will benefit from the answer? If it's just about you, save it and track down the right person after the meeting. There are all kinds of ways to be heard.