There is one common component that can make or break any negotiation–research and preparation. 

It doesn't matter whether you're trying to make a convincing case for why you deserve a promotion, or whether you're trying to convince your boss that you need more resources to complete the project that they assigned to your team.

It's the same in any situation where you need something from others, be it money or advice or something else.

For example, when you're asking something you want or need at work.

When it comes to negotiating for resources–or even asking your boss for benefits like working remotely or flexible hours, remember to view the negotiation prep like putting together a proposal.

When you're preparing the proposal, you should present the benefits to the company the same way you'd make a case for the promotion. 

How much money will you save? How much more revenue will you bring? How will your productivity increase? How will this improve your company's reputation in the market?

At the end of the day, negotiation is really about value creation and problem solving.