While also using forms of energetic protection, I also recommend putting up wards around your home or where you plan on projecting. I always keep protective crystals and charms around me as well, so that's a good idea if you don't already use them.
Here is a good article on energetic wards: http://www.witchvox.com/va/dt_va.html?a=cabc&c=whs&id=12587
For physical wards, I like to get crafty and create my own. There are tons of resources online for fun crafting ideas, and whatever you create can be turned into a ward. Where I live it's considered the holiday season right now, so I've created some snowflake decorations that I also use as wards.