Great question - and one that there's about a thousand answers to.
Some individuals may be naturally inclined to be leaders, and others may need some level of training and awareness to get into the right frame of mind. An individual who commits to practicing what they learn can be just as capable, if not more, than another with innate leadership qualities.
Communication is key, a good network is crucial, but so is the ability to acquire and maintain trust. If your employees don't trust you to make a good decision, stand up for them as appropriate, or hold folks accountable when needed, there's probably a lot of wasted effort going on. Trust is also crucial for your credibility, which will speak volumes about you before you even meet your first employee.