Know exactly where each of your items are going to be placed, especially furniture, before you move them. Changing your mind after you get there will just give you extra work.

Make a checklist for what you have to do prior to moving before you start. (change of address, setting up phones, turning on electricity/gas,etc)

Packing

Boxes are your friend. Try and put as many things in boxes as possible. This will make loading, unloading, and transportation much easier.

Wrap all breakable items in non colored paper or wrapping. Newspaper and other print may bleed on to your belongings.

Make a list of the contents of each box that you pack and attach them to the box. This will save you vast amounts of time in the long run.

Use more smaller boxes than few larger boxes. It is much easier to make a second trip than try and maneuver a overly heavy box.

Secure your boxes with strong tape. The last thing you want to happen is a box breaking during a move.

Use garment bags. You can move a entire closet with a few garment bags and not have to worry about wrinkles or unwanted spots. Folding them in a box or taking them loose can be a big hastle.

Get Help

Leave the difficult to move items to professionals. Why over exert yourself with the possibility that you might not be able to finish the task or damage your items.

Make sure you use a hand truck whenever possible, this will save lots of time and energy.