Ask yourself the following questions:

How many people do I really need to add to my network this year?

I would challenge you that you really do not need to add more to your network, you need to spend more time working on the relationships with the people in your network.  All to often the people I meet and work with are so busy adding more people to their network, building bigger and bigger networks.  These same people spend very little time digging deep into thier network, building relationships with the people they already know.

The deeper you take the relationship, the more likely that you will be able to help