Put it on your to-do list. If you don't have an alarm system, get one. The best systems have sensors on all doors and windows and link to an external security service. Tighten the fence. Exterior doors should be solid hardwood at least 1.75 inches thick.
Solid frames are just as critical.
Bolt the sliders. Add locks or drill holes through adjoining frames of sliding glass doors and windows, to allow insertion of a bolt or pin. This will keep burglars from lifting the door from its tracks. Exterior lighting exposes potential points of entry. Interior lighting and music suggest that someone is home.