Many of the influencing tactics require you to have informal power. It is a good idea to understand what your major forms of informal power are, so here’s an evaluation tool.

• Step 1: List your top 10 contacts that enable you to get work done. These contacts can be either internal or external to your organization.
• Step 2: For each contact, assign a score from 1 to 10 indicating how much you depend on them. If a contact provides a lot of value and is also difficult to replace, assign a high score. Think broadly about the value your contacts offer. This includes career advice, emotional backing, support with daily activities, information, and access to resources or stakeholders.
• Step 3: Do the same in reverse. Assign a score to yourself from others’ perspectives. Approximate how much value you offer your contacts and how difficult it would be to replace you. Be honest.

Next, look for red flags which could indicate that you lack informal power.

• Do all of your contacts work in one team, function, product unit, or office building? This could indicate a limited ability to generate value beyond the basic requirements of your job description.
• Do your contacts provide you with more value than you return? Such relationships are difficult to sustain in the long run. Asymmetries in dependence indicate others hold the power in a relationship.   
• Is all of the value you give or receive concentrated in a couple of contacts? You could be vulnerable if you lose these contacts or your relationship changes.

Once you understand where your informal power lies, figure out how you can improve.

To address the unfavorable power scores, earn relationships by delivering value to your contacts. Ask yourself: what value can you deliver to them? One way is to develop and continuously improve upon a skill set that leads others to value your contributions. Then proactively use your skills to help others, well beyond the demands of your formal role. You don’t want to be the expert whom nobody knows.

Let your job help you. Manage your job description so that you can contribute to the workflows of multiple functions inside the organization as well as customers, outside partners, or regulators. Volunteer for cross-functional initiatives. View lateral transfers as a move up. By positioning yourself at the intersection of workflows, you position yourself to meet, learn from, and deliver value to a variety of diverse groups in the organization.

Get to know your stakeholders and collaborators better as individuals. You may be surprised how something that is rather easy for you to do carries significant value for them. Sometimes we freeze because we believe that we have to offer really significant contributions or do massive favors for others. Knowing others well can present us with helpful alternatives.

Outside of work, join social and professional ones. Shared activities have an underestimated impact on expanding our networks.

Your value is never solely defined by your ability to perform a formal organizational role. By creating value for diverse stakeholders and making yourself irreplaceable, you open possibilities for yourself within the organization and beyond. And, by doing so, you add value to your company.