Great post! Thanks for going into detail. I connect with the part about wanting to say "yes" to people.
I define productivity as efforts that move you forward toward your primary goals (too many goals reduces productivity). Being busy with useless activities is not productive. It's been an ongoing process for me to be mindful of my activities and ask myself "Why am I doing this?" and "Is doing this going to gain me the most ground?"
Networking is a great example. When I see notifications for "Women Who Code" events, I think, oh cool, I might meet someone awesome there. But when I think about it, I can get much further toward my goals by spending two hours making a fun little website.