It's normal to lose your drive sometimes, especially if you're not happy with the work you've done recently. The time I felt that the most was right after I got my first DSLR and I shot Tigerama, Clemson's homecoming pep rally, which isn't the most camera friendly thing to shoot anyway. I was so frustrated with these pictures that I gave up on editing and didn't look at them again until four years later before I shot the Miss Clemson University pageant. If you need a reminder that it gets better if you don't give up, check out these two photos. I know it looks like I edited one and purposefully edited the other one badly, but they're not edited at all.
This is the difference that can be made with 4 years of learning and experience (and also a change in gear).
I hope that helps motivate you a little in whatever you're doing. I was laughing and snapchatting the 2012 photos to my fiance and my photographer friends. Good thing those photos never had to be used anywhere! It's a nice reminder of how much I've improved and why it was a good idea to not give up.