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Many times the solution to a problem that might take a second to solve might take years to solve because of association or the kind of people you roll and network with.
Being In the midst of right networks can help you in better productivity in your aspect of life and business.
It is important that as an individual, whether introverts or extroverts to build essential connections that can help produce meaningful impacts.
Also, people with great networks tends to have a high risk of succeeding than others who are alone and trying to figure it out themselves.
Having a good network of knowledgeable people surrounding you gives you an upper hand at becoming a better person. Networking also helps in getting any information as far as your niche is concerned, because you will be well informed and exposed to valuable insights given to life issues and success.
As far as I am concerned many people who choose to stand alone and do things by themselves may have a lower chance of reaching the peak but good networking gives you the advantage of leveraging on people's opinion, learning from their mistakes and improving on yours too.
Therefore out of all associations to make in life making meaning associations that will help your career, life and businesses is the best. 
I understand that some people can be introvert and do not know how to manage a relationship or have a poor communication skill you don't have to be overly chatty around people in your network, all you have to do is ask basic questions on what you're focused on . Also, this is a world where social media has taken all over , you can simply check their profile to learn more if you can't talk to them directly or if they're unapproachable.
"Do not forget a tree cannot make a forest", therefore we need people around us to get to our desired destination in life.
Thanks for reading through.