That doesn't mean you have to quit your job to dedicate yourself to FB or any other social media channel.
But think about:
1. set a goal; I want to gain X followers by Y date
2. pick a strategy; i.e. I want to share industry news and establish myself as someone who is current with my industries trends
3. set up tools to gather relevant info to share; sign up for newsletters, blogs, etc.
4. set a schedule; I will share one article each day
This will get you started without driving yourself crazy.
And don't be afraid to be "real"; add your own comments to the articles and news your sharing. Let your fans know that there is a real person at the keyboard!