Focusing on point one, getting yourself out of your sacred, sequestered writing space and meeting other authors can be incredibly beneficial. I'm not saying that you won't ever get published if you don't network, but becoming part of a writing community keeps you in the loop with what is happening in the publishing world both locally and globally. Also, once you get to know other authors they may be able to introduce you to publishers, literary agents, editors, cover designers, or other people that could be very helpful for your writing. It's also just a great experience to sit around with a group of other authors sharing in each others triumphs and woes, discussing what is happening in the publishing industry, and getting fresh ideas about things like marketing and staying in the creative zone.
Point two is that because the world of writing and publishing is so small, news spreads like wildfire. This can be a good thing like in cases where a certain publisher is screwing over their authors, but can also be a bad thing if you let your frustration on being rejected by one publisher dictate your Twitter post. Also, bad-mouthing other authors or their work gets around, especially if it's done on social media. Even though the internet seems like a huge ocean and one little rude comment seems like a drop of water, just one person seeing that post can lead to another and another and then eventually someone you might want to read your work. Disrespectful comments can bias a publisher or agent against taking you on as a client, so just keep that in mind and maybe hold your tongue.
I Write, I Edit, I Write Again. Witness!
We're Making Better Words, All of Them, Better Words.
I Write to Burn Off the Crazy.
A Good Day Writing is a Day Writing.
It Puts the Words on the Page or it Gets the Hose Again.
Just keep writing...just keep writing...writing, writing, writing!