These tips weren't acquired through the writing workshops and conferences I've attended, or from talking to other writers or editors, but from real life writing experience.
Writer's Block

1. Set up your writing desk in the room that's farthest from your kitchen so when you find yourself editing the same sentence for the umpteenth time and you jump up to grab a Weight Watchers' fudgesicle from the freezer, you'll get enough exercise to almost counterbalance the hundred calories you're about to consume.
2. Sit down, take a breath and start writing something else.  Anything!  When that fails, stop!  Look down at your tiny dog curled at your feet.  Think about what she went through to secure that position of honor by bearing her teeth at a cat who outweighs her by ten pounds.  She looks like she's sleeping but she's not.  She's on standby, anticipating what's coming next.  Grab the leash and hit the road because the two of you are going to take the "writer's block walk".
3. Don't worry about what you look like as you trudge down the road in your sweat pants, flip-flops and your hair twisted in a knot on the top of your head, because when the neighbor looks out their window and says, "Look at that disheveled woman walking down the street talking to herself" their spouse will say, "She's a local writer, she does it all the time." And they'll smile at each other as if they know what they're talking about.
4. About this time you're ready to turn around and trot home because you've just figured out how to relate that thing a character did at the beginning of the book to that thing someone else did at the end, how one character will find out the secret and why that other one should arrive in the second chapter instead of the third.