From my experience, it is probably good to find out as much as you can about the new career you want to enter. Research, research, research! The more you know about it, the better decision you can may as to whether you really want to do it or not.
Use your connections to search out people you can talk with. Having said that, I mean that you should not ask your connections for a job, but ask them who would be a good person to speak with. That other person may know a second person that could have other connections. In my experience, most jobs are found through connections.
Lastly, I would suggest that you ask your connections if they know of anyone who has actually changed careers. That person who has accomplished the task could probably give you great insight as to tasks and tactics that may allow you to reach your goal.
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