Do you spend your life just "going through the motions?" I've always been a very purposeful person, but lately I've discovered that I'm not getting much out of going to the gym. I leave there sort of in a daze, and come home almost forgetting that I've just been there.
There was once a time when I would be so tired from the gym I couldn't function the rest of the night. That's a good kind of tired because you know you've spent your time wisely. Now I go about the rest of my day as if I never stepped even foot out my front door.
The lesson here is to be more purposeful with the things you do. If you're putting in the effort to actually get to the gym, make it worth your while. Focus on the motions and feel yourself getting stronger. Give 100% when you are there and push yourself to do just a little bit more.
If this isn't working and you're still feeling like your workouts aren't producing results, you may just be in a rut. Try changing the exercises your doing. This might be your excuse to try that new machine you keep looking at.