I have a few thoughts.
1. Did you have your locks rekeyed when you moved in? If you didn't do it now. Pay a locksmith, or go to HomeDepot and buy new locks and replace them yourself. With a screwdriver, you can do this. I have -- I'm not so good with the "handy" stuff, but the directions that come with the locks are clear.
2. Install a deadbolt that does not have a key hole on the outside of the door.
I'm not sure how else to describe this; it's a regular deadbolt that doesn't show at all externally. You can only open it from inside, usually by flipping a lever. We don't have that here (more about our situation later), but our rental property has them on all exterior doors. It's required here by code on rental properties, but it's a good option -- no more lock picking. This requires a hole saw and a way to make the place in the jamb where the bolt goes (see, I told you I'm not handy, I don't even know what that hole is called). My DH has installed these; if he wasn't around, I'd find the money to pay for this.
Does you door have (a) sidelight(s)? Because in that case, I wouldn't bother with a lock that has a flip lever on the interior. Too easy to quietly break the glass and open it that way.
3. On that note, think about your windows. If whoever it is is determined to get in, if the lock picking is thwarted, may get frustrated and try a window. It sounds silly, but make sure they're locked. The wooden bars in the sliding doors is actually a very good measure -- it's kind of sad how easy they are to unlock. I remember living somewhere with them, keys locked in the house, and they neighbor kid (really, a kid, younger than 12), said No problem, I'll get you in. And he did
Make sure coming in a window is going to be clearly and visibly awkward and difficult. Make whoever it is want to make another choice -- giving up, someone else's house, whatever. A lot of thoughtfully designed homes with lovely sitting spaces and window views....make it easier for a burglar to get in or hide. If I have a shrub by a window, you can rest assured, it won't be a good hiding place, it won't support your weight, AND you'll get good and scratched up if you try to get in that way.
I've seen references on the forum to window film and reinforced door jambs, so I won't get into that, and I'm not sure you even need to go that far. I'd start with assessing what I have above.