Dry fire rounds/practice? Is it safe to use spent casings for dry fire practice? 

If not, what's the most durable practice rounds? 

What are some reliable tips/articles for working past anticipation of a shot. I can spend all day reading articles and tips that say similar things. I'd like other shooters input.

All of my shots are left of target. Sometime lower left. Doesn't matter what caliber, or pistol I use. (I'm right handed)
TIA