Networking is pointless — unless you follow this important rule, relationship expert says

Networking. For some it's a pleasure, for others it's a chore, but for the vast majority it's a total waste of time.

That's because far too many of us ignore the most important part — the follow-up.

In fact, according to relationship strategist Zvi Band, those initial networking events are a pointless exercise if you don't see them as part of a longer, more strategic relationship building process.

"People going to networking events are seeking the same outcome as you — to meet people," Band told CNBC Make It .

"But remember, the hard work is not in the initial meeting or LinkedIn connection. It's recording your notes, following through on any action items, and keeping that relationship warm."

Relationships are our most important asset, including in achieving our career goals, Band argues in his new book "Success Is in Your Sphere: Leverage the Power of Relationships to Achieve Your Business Goals." But too few of us pay the necessary attention to building and maintaining those relationships in our professional lives, he said.

Band is far from the first person to highlight the value of strong relationships in business success. Ever since Dale Carnegie published his seminal self-help book "How to Win Friends and Influence People" in 1936, business legends like Warren Buffett have espoused the role of relationships and reputation in their careers.

However, as technology disrupts the workplace, those human relationship will become more important than ever, said Band. That's especially true for young professionals, who may not know where their careers are going and would benefit from a network of contacts, he said.

It's therefore important to follow a strategy for building and maintaining professional relationships long after the first meeting. Band said that can be broken down into a seven-step process that views relationships as "capital."

"The overwhelming majority of professionals who have reached the zenith of their potential often attribute their relationships to be their best asset," said Band, who is CEO and founder of relationship building software platform Contactually.

"Just like the dollars in your bank account, the more you pay attention to retain and grow that asset early on, the more you will be able to reap the rewards later on in your career."

Here are the seven steps to building relationship capital:

Consistent execution

The first step in building meaningful professional relationships is to make it a consistent part of your work routine, said Band. That could be as a simple as blocking out an hour each day or week to touch base with contacts, send them an email or comment on their post.