Start with positive observations and use questions to voice your opinion when you disagree with the boss on an issue, writes Kat Boogaard. Find the right moment to discuss the topic, and show that you're focused on results, not attacking your boss. Also, respect the final decision, Boogaard writes.

Ask colleagues whom you trust to stand behind you when proposing organizational changes, write James Detert and Ethan Burris. A group can show social proof of your idea's validity and increase the likelihood that your idea will spur action, they write.

Impromptu run-ins with your boss can be difficult to navigate effectively. This video takes a humorous look at how to handle some of the most common awkward situations.

The US unemployment rate held at 4.9% and companies added 242,000 jobs in February, according to the US Labor Department. The job additions beat analyst expectations, but wages did fall 0.1% for the month, and the energy and manufacturing sectors continue to experience declines.

When an interviewer asks, "What is your greatest weakness?" candidates should talk about challenges they have overcome and how their perseverance will make them good employees, Jim Leeming advises in this blog post. "This doesn't have to be a question that might trip you up -- think about it as an opportunity to explain how you're hoping to learn and grow in a new role," Leeming writes.

Spending time by yourself can help you feel recharged, confident in your abilities and appreciative of others, writes Travis Bradberry. Alone time also helps professionals build emotional intelligence and self-awareness.

Martin Molin, a Swedish musician, has created the Wintergatan Marble Machine, a musical contraption with 2,000 stainless steel marbles and 3,000 internal parts. Moved by pulleys and funnels, the marbles operate a bar loop built with LEGO parts, as well as a bass, cymbal, kick drum and vibraphone.