But remember: Becoming "indispensable" can be a double-edged sword. Get too indispensable and you might find yourself unable to move beyond your niche.
Effective IT habit No. 1: Get down to businessYou may be your organization's most talented developer or dedicated systems administrator. But if you don't know what the business is selling or what service it's providing, you're an unemployment statistic waiting to happen.
First step: Learn as much about the business as you possibly can, advises Mark A. Gilmore, president and co-founder of Wired Integrations, a strategic technology consulting firm.
"Ask yourself, 'How does it make its money? What are its strengths and weaknesses?'" Gilmore says. "Once you understand how the company works, you can use your IT knowledge to improve the company -- thus making yourself more valuable and less dispensable."
It helps to have a deep understanding of the company's critical infrastructure and to keep abreast of tech trends, he adds. But this may also require broadening your worldview.
"Don't look at things from strictly an IT perspective," he says. "Widen your vision to see how things relate to the business world around you. That will make you more valuable than 20 technical certifications and a master's degree."
Effective IT habit No. 2: Keep your eye on the bottom lineYour job isn't just to keep the lights on and the data center humming. It's to help your organization use technology to improve the business -- especially by trimming costs and increasing efficiency.
Servers running at a fraction of their capacity? If you haven't already virtualized your data center, now's the time. Software licenses dragging down your budget? You have an increasingly broad choice of low-cost cloud-based apps that let you pay only for what you use and only for as long as you use it. That's barely scratching the surface.
"IT professionals need to focus on areas which either drive down costs, such as virtualization, cloud computing, and converged networking, or on areas that help to generate revenue, such as social media, mobile marketing, and SEO," notes Rick Mancinelli, managing partner for IT consultants Cloud Computing Concepts. "Ultimately, those IT professionals that have a positive impact on the bottom line will be the most valuable to their employer."