Try a playing lesson with a PGA pro, they cost 200+ but they can really teach you a lot and can help you shave off some strokes.

Another thing that helped me with a pretty big drop in score was a laser range finder, before i was just guessing yardages.

Well Justin,

Sounds to me that you have your game pretty much dialed in.  If you are shooting between 76-80...then I'd say you give yourself a ton of opportunity! In my humble opinion, I'd say make a few more putts. If your GIR percentage is high then try to stick it closer.  Great job with the mid 70's to low 80's! 

Matt

Lessons are a good suggestion.  Your game sounds pretty darn good to start with.  My recommendation is to work on chipping and putting, mostly.  That's where the majority of strokes are lost.  If it's finding fairways that is the trouble, maybe dial back from a driver to a 3 wood or hybrid to find a few more and let your irons do the work after.

Matt H. has some good advice.  When I was working to get to the same space you find yourself, I began to document every single shot, Fairways, GIR, Sand Saves, Putts, etc. etc.  Once you have the DATA in front of you, it becomes very clear on where your weakest link resides.  At that point you can have a lesson, adjust you training and practice sessions etc.  At the very least, your DATA will guide you in the direction of lost shots.

Steve H just gave you some very solid advice .

Schedule some lesson with a local PGA Professional that you work well with at a course around you. Tell him what you are looking to accomplish and ask him how he can get you to that point. Try to play some golf with some players that are better than you such as some low handicap players. Watch them practice and warm up for the round and watch them during the round to see if you can pick up on some things they do to help you improve. Sit down with these players and talk with them about what the do to prepare and during practice. Work on the mental side of the game as there are a lot of good books out there that will help. I have read many of the Bob Rotella books and recommend them. Dedicate time and effort into practice as much as possible and most importantly have fun. If you would like to send videos of your swing I can offer some help. 

While I've never shot even par, but I've broken par on 9 holes several times.  I think the biggest lesson I have learned is to be humble.  If you're in the mid 70's then you've got the game to do it.  It's probably more course management than anything.  

The rounds I've gone low on are the ones where I take the easy road.  I don't aim at every pin, and only go for hero shots if I'm confident.  Birdies are a lot of fun, but if you play for par and eliminate the big numbers, you're scores will continue to drop.