Sorry to hear this happened to you. I've had two close friends experience home break-in's. One of them also had a drive-by shooting occur next door to him, a few years back!
The thing is -- nothing really restores that feeling except time. Having dealt w/ this (via friends) I think this may be how I would handle it:
1. Sit down with wife & kids and ask them what would make them feel safe again. Some of the following will likely be on their list. Listening to them, and implementing items they say will help them regain their security.
2. Get a monitored alarm (cellular based)
3. Put all the stickers and signs up announcing your monitored alarm
4. Get the loudest siren you can buy. "Accidentally" set it off occasionally so neighbors hear it. Two things happen here. One, if one of your neighbors is a thief, he knows you aren't an easy target any more. Two, you can use the opportunity to talk with your neighbors and make them aware of the problems you've had and ask them to keep an eye out. Maybe even request they give you a call on your cell and call the police if you don't answer.
5. Maybe a dog. If you want a poodle, it isn't effective. If you want a rottweiler, it could be effective. In all cases, remember the dog will require work and attention 100% of the time. If you or your family can't devote that, then maybe it's not a good solution.
6. Motion sensored lights on fronts, sides and back of house.
7. With the above in-place, now create a plan in case someone is the house should it happen again. Things like how to get out of the house w/o being detected. Maybe one or two pre-paid cell phones that are always charged and hidden in different areas. Different "safe areas". Once you create a plan, practice it. Then re-practice on a frequent basis so it becomes second nature.
8. I know some people don't like guns -- but the plan above (for me) includes them. Multiple ones stashed in case I get pinned up. It also includes proper training for the wife and kids so they too can use them. Proper gun safety can't be stressed enough! Tactical training and range time are necessary. Yes I said tactical training -- things are very different in those moments and want to make sure everyone can handle the situation properly, or guns do NOT need to be a part of your plan. Some of the better gun ranges typically offer these tactical classes. If you have a hard time finding them, contact your local police as they use someone to train their officers.